1. The DNS web interface
The Interface for Hosts Update is the preferred mechanism for updating the Oxford University hosts database.
If you are a departmental or college network administrator who wishes to use this scheme you will need to apply for a password from firstname.lastname@example.org.
- A records
- The principal name
<->number mapping for hosts. For instance, IP address
- CNAMEs (aliases)
- These allow multiple names to point at a single host. For instance, a machine
foo.misc.ox.ac.ukmay act as the webserver for the college, and thus a CNAME entry pointing
www.misc.ox.ac.ukat that machine can be put in. Note that the alias points at a name, not a number.
- MX (mailer) records
These allow for mail addressed to one host to be handled by a different host, for instance all mail addressed to
foo.misc.ox.ac.ukwill be sent instead to
bar.misc.ox.ac.uk. Note that this will not affect the username portion of an email address
email@example.com; it only allows one to perform per-hostname filtering.
The record name need not exist as an A record; while the A record
mail.misc.ox.ac.ukmight not exist, it can exist as an MX record, ensuring that any mail to addresses with
mail.misc.ox.ac.ukto the right of the "@" sign is directed to a mail server.
An MX record may point to multiple hosts, in which case systems will attempt to pass on mail in order of priority should the primary mailserver be unavailable. Often
oxmail.ox.ac.ukwill act as the secondary mailserver. A name in an MX record must not be a CNAME record.
- Other records
- In a few cases, DNS records may be required which cannot be processed by the DNS web interface. In these cases, please contact firstname.lastname@example.org with your requirements.