The Oxford Nexus email, calendaring, address book (etc.) service is built upon Microsoft Exchange. On 14 February 2012 we began the process of upgrading the service from Exchange 2007 to Exchange 2010. These pages are designed to inform you as to the impact of this change and what you may need to do.

Why do we need to upgrade to Exchange 2010?

The main benefit that most people will see is that Outlook Web App (or OWA) is improved, but also it is the same for users of the most popular browsers (not just Internet Explorer). This means that users of the recent versions of Firefox, Safari on Mac, Chrome and Internet Explorer will see the same functionality and a rich interface for web-based working. There are other benefits regarding the running of the service (more cost effective, easier to maintain) as well.

Look out for the following effects during and after the Valentine's day turn on. On 14 February 2012, the Nexus Team turned on some Exchange 2010 functionality and on 16 February further functionality was enabled. These changes had to happen before anyone is upgraded to the new service. However, there may be a few lasting effects:
  • Apple Mail users may need to re-configure their clients, or avoid using Apple Mail for a while. More information...
  • Davmail users (these are mostly people who use the Lightning calendar client with Thunderbird) may need to re-configure their clients. More information...
  • A few of the people who use the IMAP and POP protocols to pick up their email may have difficulties on and after 16 February. Warning emails have been sent to those who may be (inadvertently) using "NTLM" authentication. There is a simple one-time fix. More information...

1. What differences should I expect with Exchange 2010?

Most users will notice only an improvement to the Outlook Web App (OWA) interface.

Graphic of the general email appearance of Outlook Web App for Exchange
                  2010.
Figure 1. Outlook Web App for Exchange 2010

Which web browsers can now use the full version of OWA?

With Exchange 2007 (our old implementation) only some recent versions of Internet Explorer could use the full OWA functionality. In Exchange 2010, the following web browsers should use OWA-full.

On a computer running Windows XP, Windows 2003, Windows Vista, or Windows 7:
  • Internet Explorer 7 and later versions
  • Firefox 3.0.1 and later versions
  • Chrome 3.0.195.27 and later versions
On a computer running Mac OS X 10.5 and later versions:
  • Safari 3.1 and later versions
  • Firefox 3.0.1 and later versions
On a computer running Linux:
  • Firefox 3.0.1 and later versions

Source: http://help.outlook.com/en-us/140/bb899685.aspx.

If you use a Web browser that doesn't support the full feature set, Outlook Web App will open in the light version.

2. Known issues during coexistence

The following problems will exist to a greater or lesser extent during the coexistence period. Note that, on the whole, users will notice the coexistence effect only until their mailbox is upgraded to Exchange 2010. Coexistence began on 14 February 2012.

Most people should be aware of the following issues:
  • When using Outlook Web App (OWA), you may be redirected to a URL which reads https://legacy.nexus.ox.ac.uk/owa. This is normal.
  • If your 'bookmark' or 'favourite' to Nexus/OWA looks anything like https://nexus.ox.ac.uk/CookieAuth.dll?GetLogon?curl=Z2Fowa&reason=0&formdir=2, this will cause double-authentication with many browsers. Please change this as soon as you can to https://owa.nexus.ox.ac.uk.

The intended audience for the following notes on this page is IT Support Staff and users of email clients who are confident in making changes to the set up of their software.

Table 1. Coexistence problems and their suggested work-arounds.
ProblemMitigation / work around
OWA has difficulties opening calendars cross platform (i.e. when one user/mailbox is on Exchange 2010 and the other is on Exchange 2007). Migrations have been scheduled Unit by Unit in order to avoid the occurrence of this problem. In OWA/Exchange 2010, the work around is to delete the entry/short-cut to the Calendar and add it again.
Outlook 2011 (for Mac) cannot open delegated calendars, inbox or full mailboxes cross platform. Could add a delegated mailbox as a separate account if you know the password.
Entourage 2008 EWS cannot open delegated calendars, inbox or full mailboxes cross platform. Could add a delegated mailbox as a separate account if you know the password.
Apple Mail and iCal cannot open delegated calendars cross platform. Could add a delegated calendar as a separate account if you know the password.
New Apple Mail profiles will not auto-configure correctly for iCal and Address Book. After an account has been added, the 'internal' Exchange server URL has to be altered. Ensure that both 'Internal' and 'External' server settings are updated correctly.
Davmail cannot view free/busy information across platforms. None.

3. Known issues with Exchange 2010

The following changes also accompany the move from Exchange 2007 to Exchange 2010:
  • Loss of WebDav. This will become apparent to you when your mailbox is upgraded, and affect you if:
    • you are a user of an old version of Entourage (on the Mac). Your solution is to upgrade to a later version of Entourage that uses Exchange Web Services (i.e. 'Entourage 2008 Web Services Edition') or 'Microsoft Office for Mac 2011' (i.e. Outlook 2011)
    • you are a user of the Lightning calendar plug in for Thunderbird (or similar). Your solution here is to use the Davmail connection with Exchange Web Services (EWS). See the notes regarding Davmail and the Exchange 2010 upgrade for more information.
    • you are a user of Davmail in another context. It is possible that you may be able to configure Davmail as per the same instructions.
  • Loss of 'Messageware enhanced' OWA Light. This may become apparent to you when your mailbox is upgraded. Only the standard OWA Light is available. This only affects non tier 1 browsers (i.e. excluding those listed on the What differences should I expect with Exchange 2010? page), including IE6, pre-Firefox 3.0.1 and pre Safari 3.1. Significant functionality that is lost:
    • Multi-day calendar
    • Ability to open shared calendars
    • Ability to initiate sharing your calendar using the OWA Light interface (another client must be used to set this up)
    • Spell checking (but most browsers have an option to enable on-screen text box spell checking, so this can be worked-around)
  • NTLM Authentication over IMAP. If this is a problem for you, it may have become apparent on 16 February 2012 when the Exchange 2010 IMAP service was enabled. If you suffer from an unexpected 'Authentication failure' (i.e. log in failure) it may be that "NTLM" is set in your email client. This needs to be set to "Normal" or "Normal password" (or equivalent). Check that your client is configured as per the OUCS Nexus client configuration instructions.
    • Within the most common IMAP Email clients (Thunderbird for instance), this setting is often displayed as 'Authentication Method', 'Authentication type' or 'Secure Password Authentication (SPA)'.
    • Commonly, the *correct* selection for this setting would be 'normal password' or 'plain text authentication' or it would involve NOT selecting 'Secure Password Authentication (SPA)'.

3.1. Apple Mac related issues

Apple Mail (and Address Book and iCal) adding in (or removal) of ".legacy"
Before following the instructions at http://www.oucs.ox.ac.uk/nexus/upgrade/index.xml?ID=applemail disconnect from the network. (There is a problem of new email coming down after the connection settings have been changed, and before the client is restarted, that causes the appearance of duplicates).
If you see duplicates in Apple Mail after adding (or, later removing) the ".legacy" server connection details
This may be cured by going and selecting Mailbox->Rebuild from the main menu. However, please ensure that the client has been restarted (Applekey-Q and restart).
Apple Mail users who use IMAP being told to change settings to use the correct EWS connection
This can confuse IMAP users (as Exchange Web Services should be irrelevant to them). There are three main reasons why they could have been told to change their settings:
They have another Mac client and that is set up to use EWS
Address Book and/or iCal could be set up to use EWS
Even though they may never use AB or iCal this can be why the person showed up in the logs (and was sent an informative email). If they genuinely don't use AB and iCal, then they can ignore everything and not make any changes.
They may have received a warning regarding IMAP and NTLM
Nothing about EWS but the IMAP settings are using NTLM in their password connection. Please check the OUCS help page and change this setting. The connection should have stopped working on 16 February 2012.
Apple Mail users get their Apple Mail rules broken
(N.B. This does not apply to server-side rules or rules set up via OWA.) The namespace change (from nexus.ox.ac.uk to legacy.nexus... and - presumably - back again) can cause rules to break within Apple Mail. There is no simple fix for these problems after they have occurred. The advice is

3.2. Browser issues

Double authentication to OWA?
If you have bookmarks like https://nexus.ox.ac.uk/CookieAuth.dll?GetLogon?curl=Z2Fowa&reason=0&formdir=2 this will cause a prompt for you to log in twice. Either remove everything after the 3rd slash (i.e. Cookie....) or bookmark https://owa.nexus.ox.ac.uk (either will work perfectly well).
After you are upgraded, you continue seeing OWA-Light, when you were expecting the more advanced OWA-Full
There are two main reasons for this:
  • Your browser/operating system combination is incorrect. See the list of supported browsers on the What differences should I expect with Exchange 2010? page.
  • You are using a correct browser/operating system combination, but you have "Use the blind and low vision experience" set as an option. To remove this setting:
    • Click on the 'Options' link near the question mark in the top right-hand corner of the OWA window.
    • Click on 'Accessibility' in the list on the left.
    • Un-tick the 'Use the blind and low vision experience' check box.
    • Click on the 'Save' icon.
    • Sign out and log back in again.
    This should cause your OWA interface to transform to OWA-Full. If it does not...
  • The cause could be that you have not yet been upgraded. Please check with your local IT Support staff for more information.
You see the "Use Outlook Web Access Light. Faster interface with fewer features. If you are not using Internet Explorer 6.0 or later, this is your default interface." message each time you log in to Nexus (and you are unable to select or de-select the checkbox).
Known issue. You may well be using a supported browser (see the list on the What differences should I expect with Exchange 2010? page). This prompt will stay with us for some time and will continue to be a little misleading. Future work (after all of the upgrades have been completed) will address this. If you prefer to use OWA-Light, you must select the 'Use the blind and low vision experience', as per the instructions above (but in reverse).
You can't find your 'remembered' email addresses
Instead of saving email addresses as proper 'Contacts', some people had grown to rely upon the last 100 'cached' email addresses that OWA remembered. In OWA-Light, these were collected in a little box alongside the email interface. In OWA-Full, they magically appeared as you began typing. These are not migrated between Exchange 2007 and 2010 (there are very good reasons why this would be a bad idea for most Exchange migrations). Those who rely on these lists need to re-build them by looking or searching through their Sent Items. All email addresses will be in Sent Items, as it is only by sending someone an email that their email address can be added to the cached email address list.
Picking up external calendars (e.g. google calendars) via OWA
In the interface, it appears that you can do this. However, it does not work as yet. We are attempting to get this functionality to work at the moment.
OWA defaults to grouping your emails in 'Conversation view'
This has proved to be quite unpopular (for understandable reasons). It would appear to default to that view for some, if not all, users. The Nexus Team have not been able to change this for new upgrades, so everyone (who doesn't like it) needs to uncheck the 'Conversations' checkbox that can be found within the 'Conversations by...' drop down list. (This can't be turned off 'globally', so you need to do it the first time you visit each folder).
Using Internet Explorer, I don't see when new emails arrive
Some people have noticed that they need to keep pressing refresh to see new items. This may be due to the namespace change and to the way Internet Explorer works with trusted sites. The fix is to add https://owa.nexus.ox.ac.uk as a Local intranet site. To do this:
  • Go to Tools > Internet Options > and find the Security tab.
  • Click on 'Local intranet' (the planet+monitor icon) and click the Sites button.
  • Leave the settings in the 'Local intranet' pop up window the same as before, but click on the 'Advanced' button.
  • Add in https://owa.nexus.ox.ac.uk and click 'Close', 'OK, and 'OK'.
  • The figure below summarises this process.
    Graphic showing the editing of Local intranet sites in Internet
                              Explorer to include https://owa.nexus.ox.ac.uk
    Figure 2. Adding https://owa.nexus.ox.ac.uk as a Local intranet web site.

3.3. Outlook issues

Adding in a mailbox where you have full access, but where that mailbox is hidden from the Global Address List (GAL)
There are some changes here which are difficult to express concisely. It is still possible to do this, but you may have to contact the OUCS Help Centre (and then the Nexus Team) for advice. A few pointers:
  • If the person trying to connect to the hidden mailbox is using Outlook 2003, this is not possible.
  • If the person trying to connect to the hidden mailbox is using Outlook 2007, please contact OUCS to have something called 'automapping' switched on.
  • If the person trying to connect to the hidden mailbox is using Outlook 2010, using 'automapping' (as above) is probably the easiest option. However, the method outlined at Running multiple Nexus mailboxes under one profile (Outlook 2010) still works, but the end result is that the mailbox is displayed a in a somewhat 'unfriendly' way.
Sharing calendars with people who are hidden from the Global Address List (GAL)
This is difficult, although not impossible! If person A wishes to see hidden person B's calendar, and presuming person B has enabled this, person A must create a personal contact entry for person B before accessing the calendar. Full details of how to do this will shortly be documented within the general OUCS Nexus documentation.

3.4. BlackBerry issues

BlackBerry problems for people with a BIS contract
(N.B. This does not apply to those using the Oxford Nexus BlackBerry Enterprise Service, i.e. BES). For people who have a BlackBerry, using BlackBerry Internet Service, (BIS) and who have found that their connection no longer works, they should do the following only until their mailbox is upgraded. Change the Outlook Web Access URL field to:

https://legacy.nexus.ox.ac.uk/owa

N.B. Once your mailbox has been upgraded (We will notify when this will happen for you), you need to change it back to:

https://nexus.ox.ac.uk/owa

The OUCS BIS instructions provide help about configuring this on your Blackberry Smartphone.

3.5. UNIX and Linux-related issues

Certificate problems with UNIX IMAP clients
We have heard that some UNIX IMAP email clients have shown some certificate errors. There is no fundamental reason why this should be restricted to UNIX clients, as the cause is a new type of certificate (Comodo) that the Nexus service is using. However, some older systems assume that the user will take on the responsibility of updating certificate chains etc. (Most modern Linux systems, e.g. Ubuntu, Debian, CentOS, etc., will automatically update).
  • If this affects you, then the system administrator (possibly you) need to install the root Comodo CA certificate) into the trusted certificate store. Visit https://support.comodo.com/ for more details.

4. Unconfirmed issues and breaking news

These are issues that have come in mailboxes that have already been migrated. The information here is in order to alert people to possible issues that have not yet been researched or confirmed by the Nexus Team, or of issues that appear to be very rare and difficult to reproduce.

4.1. General issues

Out of office/vacation/OOF is switched off or reports an error
This problem would appear to be rare, but we have had one instance of the end date of an Out of Office (OOF) message being corrupted, possibly due to the migration. The fix has been simply to switch OOF off (i.e. into the state where the person is 'at work') and then re-set it with an appropriate end date.

4.2. Apple Mac related issues

N.B. The Apple Mac clients have proved to be the most troublesome to early adopters!
(This does not include iOS, iPad, iPhone, iPod etc, which have tended to work fine). If your mailbox is about to be upgraded, or you are about to make some changes to the server connection settings as outlined at Important changes for Apple Mail users, you are strongly encouraged to avoid potential problems by disconnecting your computer from the network. Make the changes, or wait for your upgrade to happen (and make any connection changes that you know are necessary), restart the software and re-connect to the network.
iCal gets confused when >1 Nexus mailboxes are displayed
This issue was discovered by early adopters. iCal on Snow Leopard has been observed to behave oddly, after the mailboxes have been upgraded, in that entries from one calendar are displayed as duplicates in another calendar. The solution is to ensure that all calendars have their server settings are updated before restarting the software. To pro-actively avoid this problem, If the problem has already occurred,
  • check all iCal server settings. Ensure they are correct and re-start the software (as outlined in the main instructions).
  • Refresh all calendars
Rogue entries such as "casxx.ac.oak.ox.ac.uk" appearing in server settings
This has been reported. It should not happen unless a new profile is created (something we have advised against in these pages). However, it would appear that this can happen for users of iCal or Address Book where Apple Mail is not fully configured. If this has happened to you, our advice is:
  • Ensure that your mailbox upgrade has taken place before making further changes
  • Disconnect your Mac from the network (including wireless network)
  • Follow the instructions at Important changes for Apple Mail users to update all three clients (Apple Mail, iCal and Address Book), regardless as to whether you use all three.
  • Restart the software
  • Re-connect to the network.

4.3. iOS, iPad, iPod, iPhone issues

iPod notes having problems synching
We have had reports of iPod 'notes', that used to synch successfully with the server via IMAP, remaining on the server but disappearing from the iPod. If this happens to you, we have not found a way of restoring the old notes to the iPod, but new notes created on the iPod may be synched. One report found that it was possible to use an email client (such as Outlook) to find the 'notes' and email them somewhere, but not to get them synching again without creating them anew on the iPod.

4.4. UNIX and Linux-related issues

Inability to use Chrome, or other browsers, with Linux to give the full OWA experience (simply defaults to OWA-Light)
This is as expected. See the list of supported browsers on the What differences should I expect with Exchange 2010? page. Microsoft's recommended browser for Linux is Firefox.

5. Frequently asked questions

Click on one of the topic names to view the questions for that topic. To view the answer for any question, click the '+/-' link. Click again on any link to hide its contents. (If the links don't work for you, see the advice at the bottom of this page.)

  • [+/-] Before my upgrade
      • I heard that Apple Mail may have an issue for a while. Are there any effects on other Apple hardware and software? [+/-]
        On 14 February, and until your mailbox is upgraded, you may either need to re-configure or refrain from using Apple Mail, Apple iCal and Address Book on an Apple Mac computer. See Important changes for Apple Mail users for full details. If you do nothing, they should start working again automatically. Note that this change/impact is regarding this specific software only. Other Apple hardware (e.g. iPhones, iPods, iPads etc.) and the Safari web browser are not affected.

      • I keep having to log in twice to Outlook Web App [+/-]
      • I use Outlook 2011 or Entourage (with EWS) and I'm having trouble connecting [+/-]
        These two Apple clients should configure themselves with the new settings on 14 February and thereafter. If that doesn't happen for you, please ensure that you're giving it enough time. It takes about 2 minutes to 'automatically' change the settings, which can seem like a long time. If you get tired of waiting and shut it down and restart it, the 2 minute wait is begun again. So, please give it long enough. If it still doesn't work after that, seek IT Support who may be able to help you configure this manually. (Note to ITSS: this mechanism is dependent upon an autodiscover record being in the DNS for your unit.)

  • [+/-] My upgrade
      • When will my upgrade be? [+/-]
        There are two ways to find this out. 1) Your local IT Support Staff should be able to tell you approximately when your unit will be upgraded. Near the date, they will be able to tell you the exact night. 2) At around one week before your upgrade, you will receive a notification email confirming the date/time.

      • What time of day will my upgrade be? [+/-]
        All upgrades will take place between the hours of 10pm and 8am. On the night of your upgrade, you should endeavour to avoid using an email client. Please see the 'What if I'm working with email at the moment that I'm upgraded?' FAQ below if you are concerned that that will not be possible.

      • What if my upgrade fails? [+/-]
        What happens during your upgrade is that your mailbox (which contains all of your email, calendar items, contacts, to-do lists etc. etc. is being put into an 'Exchange 2010 state'. This does involve copying data from one place to another, but if a copy fails or if corrupted items are found, the copy is discarded and the upgrade does not go ahead. Your Exchange 2007 mailbox remains unmodified so that any failure results in the status quo (no change).

      • What if my mailbox already contains corrupted items? [+/-]
        This occurs in very few mailboxes. One or two days before your upgrade, a background copy process is begun which copies nearly all of your mailbox in preparation for the upgrade. It is at this stage that we are likely to detect corrupted items. If any are found, the upgrade is cancelled and you will stay with Exchange 2007. We will contact you to ask you to investigate these items. (They may be old drafts of emails that you have long since sent, for example, and you may be happy to delete them). Once the corrupted items have been repaired or removed, your upgrade can commence.

      • Will my deleted items be kept? [+/-]
        Yes. The only items that are lost are ones that have passed the 90 days of being in your Deleted Items folder, or that you have already deleted from your Deleted Items folder, or that you have already marked to be purged by (e.g.) pressing Shift-Delete on them.

      • What if I'm working with email at the moment that I'm upgraded? [+/-]
        The Nexus Team's advice is to try to avoid this situation if you can. The actual result of this situation is unpredictable. If you cannot avoid checking and replying to email, it may be best to use Outlook Web App instead (but save as 'draft' frequently any long emails that you are composing). Ideally avoid all emailing. Problem scenarios include being cut off half way through composing a long email and losing your text or having to re-boot your machine to re-set email client software that is behaving badly due to being open at the time of your upgrade. We expect that almost all email software clients will need to be restarted with the exception of IMAP clients which may merely prompt for a log in.

      • What about email and calendars on my hand held client during my upgrade? [+/-]
        Mobile clients are usually a little more robust, being used to lost connections. It's best to suspend the synchronising if you can. However, if you find that difficult, then there is a very good chance that your client will manage without too much undue effect.

  • [+/-] After my upgrade
      • How will I know if I have been upgraded? [+/-]
        Two ways: 1) You will have received a 'Welcome to Exchange 2010' email; 2) If you visit OWA, it will now look like the Graphic of the general email appearance of Outlook Web App for Exchange 2010.

      • I think I lost something during the upgrade [+/-]
        This is highly unlikely as a strict item count is carried out before and after copying your mailbox, and this is done to a fraction of a second, even if you were to be using email at the time of your upgrade. If those counts do not tally, then the copied data is discarded and your upgrade is aborted at the final moment. The OUCS Help Centre has access to logs of this process and can confirm item counts etc. if you have any questions.

      • Will my email client work? [+/-]
        The Nexus Team anticipates that all clients that worked prior to the upgrade should continue to do so after the upgrade to Exchange 2010. Nevertheless, please avoid using email client software during your scheduled time for upgrade (see the 'What if I'm working with email at the moment that I'm upgraded?' FAQ below for more information).

      • Will my web browser work? [+/-]
        Please see the list of supported web browsers on the What differences should I expect with Exchange 2010? page. Other browsers should give rise to the OWA-light interface. However, it cannot be guaranteed that browsers outside of the aforementioned list will function successfully. Please try with your preferred browser.

      • I've been upgraded but I still see the basic OWA-Light interface [+/-]
        OWA-Full is able to work on the three popular operating systems around the University (Windows, MacOS, Linux), although there are exeptions for unusual configurations.
        Firstly check that you have the correct web browser/operating system combination (see the list of supported browsers on the What differences should I expect with Exchange 2010? page).
        If your combination should work, please see the guidance under Browser issues' on our 'known issues' page.

      • "This folder couldn't be opened. You might not have permission to open it, or it might not exist anymore." [+/-]
        You may see this in OWA during the coexistence period. It appears when you have been upgraded but the other calendar (or folder) that you should have access to has not yet been upgraded. This may be an intractable problem, but can often be remedied by removing the link to the folder/calendar and adding it again. To remove and add a calendar (or room or resource calendar) in OWA, right-click and select 'Remove Shared Calendar'. Then find the 'Share' button at the top of the window and select 'Add Calendar'. Then, make sure 'Calendar from your organization' is selected and click on the 'Name...' link. Find the calendar and double-click on it. It should appear at the bottom of the screen. Click 'OK'. Now you should be able to access it if you have the right permissions set.

      • I can't access calendars from other mailboxes in OWA [+/-]
        If you were able to do this before you were upgraded and you find that you cannot now, it could be that those calendars (mailboxes) have not yet been upgraded. Try the fix outlined in the This folder couldn't be opened... FAQ.

      • I use Outlook 2011 or Entourage (with EWS) and I'm having trouble connecting [+/-]
        These two Apple clients should configure themselves with the new settings on 14 February and thereafter. If that doesn't happen for you, please ensure that you're giving it enough time. It takes about 2 minutes to 'automatically' change the settings, which can seem like a long time. If you get tired of waiting and shut it down and restart it, the 2 minute wait is begun again. So, please give it long enough. If it still doesn't work after that, seek IT Support who may be able to help you configure this manually. (Note to ITSS: this mechanism is dependent upon an autodiscover record being in the DNS for your unit.)

      • I'm using Outlook Web App and I can't find my 'remembered' email addresses [+/-]
        Please see our 'known issues' page for known browser issues.

      • Picking up external calendars (e.g. google calendars) via OWA doesn't seem to work. [+/-]
        This functionality may be enabled soon, but does not work at present.

      • OWA is grouping my emails in 'Conversation view' [+/-]
        Please see our 'known issues' page for known browser issues.

      • My spell checker doesn't work [+/-]
        If you are missing a spell checker, this should mean that you are using OWA-Light, as OWA-Full has a spell checker built-in. (If you think that you should be using the Full functionality, see the other FAQ, I've been upgraded but I still see the basic OWA-Light interface, above.)
        If you have (or prefer) to use OWA-Light, it is usually possible to use your web browser's built-in spell checking functionality.
        Please see our known issues page for more information.

      • Using Internet Explorer, I don't see when new emails arrive [+/-]
        This is a known issue with a simple fix. Please see our 'known issues' page for known browser issues.

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6. What is the timetable for upgrades?

After circulating a draft timetable (for comments) to all units' IT Support Staff (ITSS), a final schedule was published on 15 February 2012. Your ITSS should be able to tell you when your upgrade is likely to occur. (You will also receive a personalised email at least a week before informing you of the date/time. For more information please see our FAQs page.) Upgrades are divided into 'early adopters' and the 'main group'.

After the 'turn on' of Exchange 2010 on 14 February 2012, a group of early adopters will be upgraded on the night of 19-20 February 2012. The early adopters, which includes all OUCS staff, will assist (amongst other things) in validating documentation (see http://www.oucs.ox.ac.uk/nexus/help/).

The main group of mailboxes (the rest of the University) will be upgraded from 4/5 March 2012. We hope that the upgrades will be largely complete by 30 March 2012. The weeks of 2, 9 and 16 April may be used for any final mailboxes that could not - for whatever reason - be upgraded during the main schedule.

7. Important changes for Apple Mail users

Note, this will also affect the Mac iCal client and Address Book, if you use these software clients.

Apple Mail users accessing Oxford Nexus via Exchange Web Services (EWS) experienced a change on or after 14 February 2012. (If you use Apple Mail and did not notice any interruption in service on 14 February, it may be that it is configured to use IMAP - in which case you should do nothing.)

If you are affected, you have the following options:
  • Do nothing. Use another email client instead (including Outlook Web App). Once your mailbox has been upgraded, Apple Mail will begin to work again.
  • Reconfigure your Apple Mail client (and iCal, and Address Book, if relevant) to use the server name "legacy.nexus.ox.ac.uk". When your mailbox is upgraded, you will need to change these back to "nexus.ox.ac.uk". Don't forget to stop the software completely (AppleKey-Q) as the changes don't refresh without fully restarting the client. See below for screen shots and instructions.
  • Reconfigure your Apple Mail client to use IMAP. This seems like an obvious solution. It can be made to work but we do not recommend it. This is a relatively complicated procedure and can cause undesired effects.

** Note - this change/impact is regarding this specific software only. Other Apple hardware (e.g. iPhones, iPods, iPads etc.) and the Safari web browser are not affected. **

What to do to set up Apple Mail after 14 February but before your upgrade to Exchange 2010

Instructions for re-configuring an existing Apple Mail client (and iCal and the Address Book)

The main changes that you need to make on 14 February is to go into the 'Preferences' to find the 'Account Information' or 'Server Settings' of all three of these applications (or whichever ones you use) and change the Internal server: and External server: settings both to legacy.nexus.ox.ac.uk.

When your mailbox has been upgraded, again go into the 'Preferences' to find the 'Account Information' or 'Server Settings' of all three of these applications and change the Internal server: and External server: settings both back to nexus.ox.ac.uk (i.e. just remove the "legacy." that you added previously.

The following notes have been taken from an installation of Snow Leopard. Other versions are roughly similar.

To make these changes in Apple Mail, in the main menu (top of the screen):
  • (optional, but see the final bullet, here) disconnect your Mac from the wired and wireless networks
  • click on Mail, then
  • click on Preferences
  • Make the changes detailed above (and illustrated in the screen shots below) in the Accounts - Account Information window.
  • Save these settings by clicking the red close button. (You may be prompted to confirm the Save).
  • Then close down Mail entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, Mail -> Quit Mail. When you next start up Mail, the new settings should take effect.
  • Reconnect your Mac to the network
  • (Note if you did not disconnect from the network, you may see odd effects such as duplicate emails appearing. These are phantom duplicates: they only exist on your Mac and not on the server. The duplicates should be removed if you select Mailbox -> Rebuild from the main menu.)
To make these changes in iCal, in the main menu (top of the screen):
  • (optional, but see the final bullet, here) disconnect your Mac from the wired and wireless networks
  • click on iCal, then
  • click on Preferences
  • Make the changes detailed above (and illustrated in the screen shots below) in the Accounts - Server Settings window.
  • Save these settings by clicking the red close button. (You may be prompted to confirm the Save).
  • Then close down iCal entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, iCal -> Quit iCal. When you next start up iCal, the new settings should take effect.
  • Reconnect your Mac to the network. If you see any duplicates or other synch problems, select Calendar -> Refresh All from the main menu.
  • Note that you may see an exclamation mark on the iCal icon. If you do, click on it and re-enter your password when asked. It is possible that you will not see this behaviour, however.
To make these changes in Address Book, in the main menu (top of the screen):
  • (optional) disconnect your Mac from the wired and wireless networks
  • click on Address Book, then
  • click on Preferences
  • Make the changes detailed above (and illustrated in the screen shots below) in the Accounts - Server Settings window.
  • Save these settings by clicking the red close button. (You may be prompted to confirm the Save).
  • Then close down Address Book entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, Address Book -> Quit Address Book. When you next start up iCal, the new settings should take effect.
  • Reconnect your Mac to the network.

Useful screen shots for re-configuring existing Apple Mail clients

Apple Mail main menu, Mail -> Preferences

Graphic of the usual configuration for Apple Mail (before 14 February and
                  after mailbox upgrade)
Figure 3. Usual configuration for Apple Mail (before 14 February and after mailbox upgrade)

During coexistence...

Graphic of the coexistence configuration for Apple Mail (from 14 February
                  until mailbox upgrade)
Figure 4. Configuration for Apple Mail during coexistence of Exchange 2010 and Exchange 2007 (required on 14 February 2012 and until your mailbox upgrade)

Note that it may be best to disconnect from the network (wired and wireless) while making these changes. After making changes, don't forget to close down Mail entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, Mail -> Quit Mail. When you next start up Mail, the new settings should take effect.

Useful screen shots for re-configuring existing iCal clients

iCal main menu, iCal -> Preferences -> Accounts -> Server Settings.

Graphic of the usual configuration for iCal (before 14 February and after
                  mailbox upgrade)
Figure 5. Usual configuration for iCal (before 14 February and after mailbox upgrade)

During coexistence...

Graphic of the coexistence configuration for iCal (from 14 February until
                  mailbox upgrade)
Figure 6. Configuration for iCal during coexistence of Exchange 2010 and Exchange 2007 (required on 14 February 2012 and until your mailbox upgrade)

After making changes, don't forget to close down iCal entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, iCal -> Quit iCal. When you next start up iCal, the new settings should take effect.

Useful screen shots for re-configuring existing Address Book clients

Address Book main menu, Address Book -> Preferences -> Accounts -> Server Settings.

Graphic of the usual configuration for Address Book (before 14 February and
                  after mailbox upgrade)
Figure 7. Usual configuration for Address Book (before 14 February and after mailbox upgrade)

During coexistence...

Graphic of the coexistence configuration for Address Book (from 14 February
                  until mailbox upgrade)
Figure 8. Configuration for Address Book during coexistence of Exchange 2010 and Exchange 2007 (required on 14 February 2012 and until your mailbox upgrade)

After making changes, don't forget to close down Address Book entirely by pressing the Apple button (Cmd) and the letter Q or, via the menu, Address Book -> Quit Address Book. When you next start up Address Book, the new settings should take effect.

8. Important changes for Davmail users

Users of DavMail (for example Thunderbird/Lightning users) accessing Oxford Nexus should have experienced a change on 14 February 2012. In order to continue to access calendar information for your Nexus mailbox you will need to do one of the following:

  • Use Outlook Web App, or a calendar client such as Microsoft Outlook (Windows or Mac). and, once your mailbox has been upgraded, check that your DavMail client is set to use Exchange Web Services (EWS, see below).
  • reconfigure your DavMail client twice (once on 14 February and once following the migration of your Oxford Nexus Mailbox).

Instructions for re-configuring DavMail at the start and end of the coexistence period

On or after 14 February 2012, re-configure your DavMail client by amending the "OWA (Exchange) URL" from
  • https://nexus.ox.ac.uk/owa
to
  • https://legacy.nexus.ox.ac.uk/owa
Also, this may be a good time to ensure that EWS is being used (see below).

When you are informed that your mailbox has been migrated to Exchange 2010, this process must be undone, but to a new URL that should be somewhat more future-proof. Change from:
  • https://legacy.nexus.ox.ac.uk/owa
to
  • https://davmail.nexus.ox.ac.uk/owa
However, if you have already made it, do not reverse the EWS change. EWS is a requirement for Exchange 2010 as support for WebDav has been dropped.

N.B. In some newer versions of Ubuntu, within the Default Unity desktop for instance, there is no system tray to launch Davmail. It may be necessary for you to manually edit your Davmail properties file to configure the correct URL and Exchange protocol settings. The settings probably looks something like this:

davmail.enableEws=true

davmail.url=https\://davmail.nexus.ox.ac.uk/owa

Alternatively, you can configure the Unity desktop to display the notification area.

A note about EWS

In order for DavMail to work with Exchange 2010, the Exchange protocol used must be EWS. EWS is a requirement for Exchange 2010 as support for WebDav has been dropped. Find the Exchange protocol settings in your DavMail configuration and ensure that EWS is used and "WebDav" is not. This change can be made on 14 February alongside the "legacy." addition, or you can choose to make the change when your mailbox is upgraded (i.e. when you remove the "legacy." and add "davmail.").

Instructions for configuring Nexus Calendars in Thunderbird using Davmail and Lightning are given on the OUCS web site.

9. Impact points: a summary for ITSS

This page is intended to give a summary of the issues of which ITSS should be aware. Documentation exists within these 'upgrade' pages (this single XML document) giving further details. Note that for users of Outlook (on Windows) 2003, 2007 and 2010 there should be no visible coexistence or reconfiguration issues.

Table 2. Summary of issues for ITSS
When issue is likely to ariseIssue
On 14 February 2012 During the upgrade (7-9 am), users of OWA will see a "Service Unavailable" page. Mobile devices may see a "server unavailable" (or similar) message.
Any client issues should first be approached by closing the client software (*fully*) and reopening.
When using Outlook Web App (OWA), users may notice a redirection to a URL which reads https://legacy.nexus.ox.ac.uk/owa (This is normal: nothing to worry about, but will stop after the user's mailbox upgrade.
Users of Davmail (e.g. Lightning users), Apple Mail, the Mac iCal client and Address Book must re-configure to use legacy.nexus.ox.ac.uk during coexistence.
OWA double authentication for if bookmarks/favourites/shortcuts/history similar to https://nexus.ox.ac.uk/CookieAuth.dll?GetLogon?curl=Z2Fowa&reason=0&formdir=2 is used. (Use https://owa.nexus.ox.ac.uk to logon to OWA. Ask users to amend bookmarks.)
New Apple Mail profiles will not auto-configure correctly for iCal and Address Book (problem disappears when coexistence ends).
On 16 February 2012 IMAP switchover to Exchange 2010. IMAP clients may need to be restarted.
NTLM Authentication over IMAP ends. Some users may need assistance. Set authentication to "Normal" or "Normal password" (or equivalent).
Upon start of mailbox upgrades Early adopters scheduled for 20 Feb. Main body of University from 5 March.
OWA cannot open calendars cross platform (i.e. when one user/mailbox is on Exchange 2010 and the other is on Exchange 2007).
Outlook 2011 (for Mac), Entourage 2008 EWS, Apple Mail and iCal cannot open delegated calendars, inbox or full mailboxes cross platform (there are work-arounds but this problem disappears when coexistence ends).
Davmail cannot view free/busy information across platforms (problem disappears when coexistence ends).
Upon upgrade of mailboxes Most coexistence issues/problems should stop. However, where colleagues' mailboxes have not yet been upgraded, the cross-platform issues may continue until their upgrade.
Any client issues should first be approached by closing the client software (*fully*) and reopening.
Loss of 'Messageware enhanced' OWA Light.
Users of Apple Mail, the Mac iCal client and Address Book must re-configure (only if they configured to legacy.nexus.ox.ac.uk during coexistence: otherwise clients should automatically work again).
Entourage 2004-2008 stops working. (User needs to upgrade to later version of Entourage/EWS, Outlook 2011 or other).
WebDav is lost.
Users of DavMail (e.g. with the Lightning plug in to Thunderbird) must configure their "OWA (Exchange) URL" to https://davmail.nexus.ox.ac.uk/owa and it becomes necessary to use EWS to replace WebDav.
Lightning calendar plug in for Thunderbird must use the DavMail connection with Exchange Web Services (EWS).