I wrote earlier in the year of my migration from Sendmail to QMail – and have never looked back. I am happily blocking a multitude of IP addresses and blocks, and in conjunction with SpamAssassin have vastly reduced the amount of spam I and my clients have to wrestle with.

My situtation is slightly different from that of web host, as outside of my research work I remotely manage web and other servers for clients (i.e. numerous servers for unrelated companies generally on their own premises or data centers). Outside of a handful among them running Lotus Domino or Microsoft Exchange servers using native SMTP, the majority have migrated to QMail as their MTA.

The configuration for my own servers and those of some of my clients is a package that includes POP and SMTP – using QMail, vpopmail, QmailAdmin, spamassassin and some more.

I particularly like the ease of blocking IPs in Qmail, however, I wanted to end the year with some links to well written how-to’s for the most popular MTAs.

Postfix – http://www.postfix.org/spam.html

Qmail – http://www.chrishardie.com/tech/qmail/qmail-antispam.html

Sendmail – http://www.sendmail.org/m4/anti_spam.html

Written By:

Blane Warrene

Blane is a writer and researcher focusing on Apple and Open Source technologies. Prior to this, he helped found a commercial software and consulting venture, and worked in the financial services sector as a director of technology and in varying technical roles. Blane maintains Open Sourcery: SitePoint's Open Source Blog.

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