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UW-HEP Spam & Virus Filtering

 
The UW-HEP email service is filtered by Sophos PureMessage as per the following policy:

  • for email from (internal) hosts on the UW-HEP network...
    • messages containing viruses will be rejected

  • for email from external hosts...
    • messages containing viruses will have the viruses removed and will not be delivered--rather they will be quarantined
    • messages containing suspicious attachments will not be delivered--rather they will be quarantined
    • messages with a spam probability of 80% or more will not be delivered--rather they will be quarantined
    • messages with a spam probability of 50% or more will have "[SPAM SCORE: XX%]" added to the Subject: line and will be delivered
    • all other messages will have a "X-PMX-Spam-Score:" line added to their headers and will be delivered
Futher, the system has the following features:

  • There is no need to manually delete blocked/quarantined messages because blocked/quarantined messages are automatically removed after 14 days.
  • If you have any blocked/quarantined messages at 3pm Central Standard time, you will be sent an email message which lists all of your blocked/quarantined messages, and allows you to have ones you individually choose delivered
  • You may view and manage your blocked/quarantined messages, add "approved" senders, and "blocked" senders at the following web site: http://hep.wisc.edu:28080/
  • If you receive spam messages which the system does not detect as spam, you may forward them to "is-spam@hep.wisc.edu" so they can be used to update the customized spam rule set for UW-HEP.
  • If you receive legitimate messages which the system detects as spam, you may forward them to "not-spam@hep.wisc.edu" so they too can be used to update the UW-HEP spam rule set.

To manage your blocked/quarantined messages, you must register for a PureMessage End User Web Site account at http://hep.wisc.edu:28080/send_auth.cgi/.

The PureMessage End User Web Site does not respond quickly--be patient when using it. Also, PureMessage does not send messages released out of the quarantine immediately--it may take as long as 10 minutes for blocked/quarantined messages to be delivered.

For more details, refer to the PureMessage End User Web Site documentation at http://www.hep.wisc.edu/computing/puremessage/

Please forward along all your is-spam/not-spam messages--analysis of many messages is necessary for the UW-HEP spam rule set to be effective.

 
steve rader
systems & network manager

 

 
 
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