1. Explanations of our error messages

Here is a list of error messages given by the University message submission service.

Words beginning with $ are variables which are substituted with applicable values in each message.

1.1. DAT-CLM: Message contains malware ($malware_name)

Explanation

Message contains malware.

The name Oversized.Foo means that an archive of format Foo had too high a compression ratio (currently limited to 300:1).

Solution

Remove the malware.

For Oversized.Foo you can try one of the following
  • Reduce the compression ratio to below 300:1
  • Encrypt the archive to prevent unpacking
  • Use a protocol designed for file transfer (SMTP wasn't)

1.2. HST-BAN: Sending host blacklisted

Explanation

The sending host is blacklisted.

Solution

Contact us for details.

1.3. HST-PTR: Oxford host has no PTR record

Explanation

The Oxford sending host has no PTR record in the DNS. This is a contravention of ICTC Regulations.

Solution

Contact your local IT staff and get your host registered.

1.4. RLY-OPN: Open relay not permitted

Explanation

You are attempting to use smtp.ox.ac.uk as an open relay.

Solution

The reason for this is because you are not using a computer with an Oxford IP address and you are not authenticating yourself. You should configure your email client to use authentication.

1.5. SND-VFY: Sender domain verification failed

Explanation

The sender domain is not correctly registered in the DNS. The sender address must be correct so that you can be notified of any delivery errors.

Solution

Make sure that the sender address configured in your email client is correct.

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