Email Filtering

 There are now several ways to filter email in the School of Mathematics.

We support both sieve and dovecot filters in addition to traditional procmail filtering.

The primary reason for filtering is spam, there are two different spam prevention systems in use, Spamassassin and Proofpoint, please see our SPAM information page for more information on SPAM filtering preferences.

When configuring any of the above filtering methods, the following are possibly useful headers:

  Header Positive Values
SpamAssassin X-Spam-Status Yes
ProofPoint X-IAS-PPS-SPAM YES
  X-IAS-PPS-PHISH YES