We are adding headers to mail messages which we think are spam:

• For reliably detected spam:

  X-CU-Spam: by mailserver: reason it is spam

• For spam detected by a new program under test:

  X-CU-Test-Spam: by mailserver: reason it is spam

• For spam score calculated by SpamAssasin:

  X-CU-Score-Spam: by mailserver: spamassassin: 13 (*************)

With Webmail (older version), users are able to filter messages tagged with X-CU-Spam or X-CU-Score-Spam, and have them automatically refiled into a "spam" mail folder (which should be checked periodically for false-positives). Users participating the "Spam Guinea-Pig" program will also want to refile messages containing an X-CU-Test-Spam header into a "test-spam" mail folder.

The following describes how to use mail filters in the Webmail (older version), to refile messages detected by our mail servers as probably being spam. Messages can only be refiled into an existing mail folder, so users wishing to refile these messages into an alternate mail folder will need to create the mail folder first.

• From Webmail's menu bar, click "Options":

  

• From "Options" page, select "Filters":

  

• From "Filters" page, click "Edit your filters":

  

• FIRST RULE (to catch X-CU-Spam):
  • In the "Rule Definition" section of the screen, select X-CU-Spam field for a filter
  • In the "Text" field put "by"
  • Select appropriate action for messages caught by the filter (e.g. move to folder)
  • Select folder to move messages caught by filter:

    

  • Click "Create"
  • The new filter rule should now appear:

    

• SECOND RULE (to catch X-CU-Test-Spam) (Guinea-pigs only!):
  • In the "Rule Definition" section of the screen, select X-CU-Test-Spam field for a filter
  • In the "Text" field put "by"
  • Select appropriate action for messages caught by the filter (e.g. move to folder)
  • Select folder to move messages caught by filter:

    

  • Click "Create"
  • The new filter rule should now appear:

    

• THIRD RULE (to catch based on X-CU-Score-Spam)
  • In "Rule Definition" section of the screen, select X-CU-Score-Spam field for a filter
  • In "Text" field put as many asterisks corresponding to the spam score desired to filter on (e.g. to filter messages which were given a SpamAssassin score of at least 10, enter "**********")
  • Select appropriate action for messages caught by the filter (e.g. move to folder)
  • Select folder to move messages caught by filter:

    

  • Click "Create"
  • The new filter rule should now appear:

    

By default, the mail folder has to be filtered by clicking on the "Filter" icon next to the mail folder name (e.g. INBOX):

Alternatively, you can specify when and how the filter should be applied. This can be done from the "Filters" option page:

Please be sure to check your "Spam" mail folder regularly and empty it out, after ensuring that no legitimate e-mail accidentally got caught.

Spam Guinea-Pigs, please check your "Test Spam" mail folder daily, and be sure to report any false-positives to postmaster@concordia.ca

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Copyright, © 2007, Concordia University, (IITS). Author: Peter Solodov Credits: (none) Maintained by: webdoc@alcor.concordia.ca Last update: 2007/05/17 --Tan Bui