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Custom content and header filter

Saturday, February 2. 2008

Today Alan report there are large amount of spam mails redirect from HKSTP mailing lists. However, the current RBL could not filter out. Alan suggest temporary block all emails forward from those HKSTP mailing lists.

After search google for a while, the build-in Content and Header filter of postfix seems suit for this emergency yet temporary filtering.

Reference :

  1. http://www.posluns.com/guides/hedchek.html
  2. http://www.postfix.org/header_checks.5.html