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Yet Another Sendmail-SpamAssassin Interface Milter, milter-spamc by Snert \[http://www.snert.com/Software/milter-spamc/index.shtml\] 

Integrated into Postfix

• Wiki Markup
  The easiest way to integrate postfix and spamassassin is to use spamd. See [IntegratedSpamdInPostfix].

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• This method supports \[http://www.postfix.org/FILTER_README.html after-queue\] filtering only and is not quite as robust or nearly as efficient.

• Wiki Markup
  [IntegratePostfixViaSpampd] is a more robust and efficient solution, but also a more complex one. It supports \[http://www.postfix.org/SMTPD_PROXY_README.html before-queue\] or after-queue filtering.

• IntegratedInPostfixWithAmavis is more complicated still but provides a way to plug in ClamAV virus scanning as well. It supports before-queue or after-queue filtering.
  

Integrated into Qmail

Use [SpamAssassin] to reject spam at SMTP time with \[http://www.inter7.com/simscan/ Simscan\].  Simscan works natively with \[http://www.qmail.org/netqmail-1.05.tar.gz Netqmail-1.05\], or with vanilla \[http://cr.yp.to/software/qmail-1.03.tar.gz qmail-1.03\] with the \[http://www.qmail.org/qmailqueue-patch qmailqueue patch\].

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