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Spam Engine Thresholds
Document #:10513

Applies To:
  • MailSite 9.4
  • Anti-Spam
  • MailSite 9.5

Synopsis:
In MailSite 9.4 and later the Anti Spam thresholds have changed. The Anti Spam engine in MailSite marks messages between 1 and 10. 0 is reserved to indicate the message was not scanned by the spam engine. The Sieve Filters in MailSite are used to decide how to handle these messages.

MailSite 9.4 and later implements version 6 of the MailShell Anti Spam engine.
Prior versions of MailSite implemented Version 5.

More Information:

Spam Threshold Values

Previously the thresholds were:

  • 1-6 Not Spam
  • 7-8 File to Junk Mail
  • 9-10 Spam
The default sieve filter rules were:
  • Server Receive Script set to Reject 9+
  • Mailbox Delivery Script set to file 7+ Quarantine the message in the auto purged "Junk Mail" folder

In MailSite 9.4 and later the default threshold are:

  • 1-8 Not Spam
  • 9 File to Junk Mail
  • 10 Spam
The default sieve filters in 9.4 and later are:
  • Server Receive Script set to Reject 10
  • Mailbox Delivery Script set to file 9+ Quarantine the message in the auto purged "Junk Mail" folder

Upgrading customers

Customers upgrading from 9.3 and below to 9.4+ are advised to manually update their sieve filter thresholds if they experience high levels of false negative/positive spam messages. The upgrade process will NOT update existing rules to the new defaults.

Last revised 2011-7-22 		 
 

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