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internet:mail:zimbra:zimbra_spam [2019/10/24 10:41]
gcooper
internet:mail:zimbra:zimbra_spam [2024/03/11 15:36]
gcooper
Line 5: Line 5:
 See also **[[internet:mail:zimbra:zimbra_white_black|Zimbra - Whitelist or Blacklist IP Addresses]]** See also **[[internet:mail:zimbra:zimbra_white_black|Zimbra - Whitelist or Blacklist IP Addresses]]**
  
-**Updated Best Practices**: https://www.missioncriticalemail.com/2019/03/21/zimbra-anti-spam-best-practices-2019/+**Best Practices 2019**: https://www.missioncriticalemail.com/2019/03/21/zimbra-anti-spam-best-practices-2019/
  
 **Custom Rules**: https://wiki.zimbra.com/wiki/JDunphy-SA-RuleWriting **Custom Rules**: https://wiki.zimbra.com/wiki/JDunphy-SA-RuleWriting
Line 15: Line 15:
   * https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen   * https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen
  
-**Zimbra Anti-spam Strategies**: https://wiki.zimbra.com/wiki/Anti-spam_Strategies+**Zimbra Anti-spam Strategies**: https://www.missioncriticalemail.com/2019/03/21/zimbra-anti-spam-best-practices-2019/
  
 **Best Practices**: https://wiki.zimbra.com/wiki/Best_Practices_on_Email_Protection:_SPF,_DKIM_and_DMARC **Best Practices**: https://wiki.zimbra.com/wiki/Best_Practices_on_Email_Protection:_SPF,_DKIM_and_DMARC
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 {{:internet:mail:zimbra_spam.png?750 |}} {{:internet:mail:zimbra_spam.png?750 |}}
 +
 +===== Terms =====
 +
 +^RBL            |block list for checking IP addresses                |
 +^RHSBL          |block list for checking domains                     |
 +^URIBL          |block list for checking links within an email body  |
 +^False Positive |legitimate email incorrectly identified as spam     |
 +^Postscreen     |kind of an inbound email firewall                   |
 +^Postfix        |MTA included with Zimbra                            |
 +^Amavisd        |processes emails through SpamAssassin and ClamAV before allowing Postfix to deliver them |
 +^SpamAssassin   |performs hundreds of tests on an email              |
 +^ClamAV         |anti-virus engine that ships with Zimbra            |
  
 ===== Anti-Virus ===== ===== Anti-Virus =====
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 http://wiki.zimbra.com/wiki/How_to_re-create_the_Quarantine_Account http://wiki.zimbra.com/wiki/How_to_re-create_the_Quarantine_Account
 +
 +https://wiki.zimbra.com/wiki/Restore-Quarantined-Emails
  
 ===== Banned Content ===== ===== Banned Content =====
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 ==== Enable Dspam ==== ==== Enable Dspam ====
 +
 +:!: This may no longer be available.
  
 <file> <file>
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 zmprov mcf zimbraVirusBlockEncryptedArchive FALSE zmprov mcf zimbraVirusBlockEncryptedArchive FALSE
 zmcontrol restart zmcontrol restart
 +</file>
 +
 +===== Disable Filtering for a User or Domain =====
 +
 +This will make a user a 'spam lover' and will bypass scanning if emails are sent only to them:
 +
 +<file>
 +zmprov ma user@domain.tld +amavisBannedFilesLover
 +zmprov ma user@domain.tld amavisBypassSpamChecks TRUE amavisSpamLover TRUE
 +</file>
 +
 +Disable all filtering for an entire domain:
 +
 +<file>
 +domain="domain.tld"
 +zmprov md $domain +amavisBypassSpamChecks TRUE 
 +zmprov md $domain +amavisBannedFilesLover TRUE
 +zmprov md $domain +amavisSpamLover TRUE
 +</file>
 +
 +List domains with spam filtering turned off:
 +
 +<file>
 +for DOMAIN in `zmprov gad`; do zmprov gd $DOMAIN amavisSpamLover; done
 </file> </file>
internet/mail/zimbra/zimbra_spam.txt · Last modified: 2024/04/18 13:51 by gcooper