Qmail
From Qmail Info Wiki
qmail is a mail transfer agent, or mail server package, written by Dr. Daniel J. Bernstein. It was written with two goals in mind: security and speed.
qmail by itself is indeed very fast and very secure. However, it doesn't have a lot of features which are needed by modern mail servers. Its only built-in anti-spam mechanism involves refusal to relay based on the recipient's domain name. As a result, there have been many patches written which add various features to the program.
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Other qmail pages
- cr.yp.to is djb's home page. It also contains the official home page for qmail (http://cr.yp.to/qmail.html).
- qmail.org is the most widely used un-official home page for qmail. It contains a large collection of patches.
- qmail.jms1.net contains a collection of documents written by John Simpson, who has been using qmail in production environments since 1998.
