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--- internet:mail:zimbra:zimbra_spam [2016/09/13 15:21]
gcooper
+++ internet:mail:zimbra:zimbra_spam [2024/04/18 13:51] (current)
gcooper
@@ Line 5: / Line 5: @@
 See also **[[internet:mail:zimbra:zimbra_white_black|Zimbra - Whitelist or Blacklist IP Addresses]]**
-**Zimbra Anti-spam Strategies**: https://wiki.zimbra.com/wiki/Anti-spam_Strategies
+**Whitelist and blacklist**: https://computingforgeeks.com/configure-whitelist-blacklist-zimbra-amavis-spam-filtering/
-**Improving Anti-spam**: https://wiki.zimbra.com/wiki/Improving_Anti-spam_system
+**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
+**Postscreen Pre-Checks**:
+  * https://info.zimbra.com/hubfs/landing-pages/whitepapers/Zimbra_Postscreen_Whitepaper.pdf
+  * https://wiki.zimbra.com/wiki/Zimbra_Collaboration_Postscreen
+**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
@@ Line 42: / Line 52: @@
 {{: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 =====
@@ Line 56: / Line 78: @@
 http://wiki.zimbra.com/wiki/How_to_re-create_the_Quarantine_Account
+https://wiki.zimbra.com/wiki/Restore-Quarantined-Emails
 ===== Banned Content =====
@@ Line 187: / Line 211: @@
 ==== Enable Dspam ====
+:!: This may no longer be available.
 <file>
@@ Line 219: / Line 245: @@
 zmprov mcf zimbraVirusBlockEncryptedArchive FALSE
 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>

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