May 26, 2018

Easy-to-use greylist milter for sendmail and postfix

This is a port of Emmanuel Dreyfus’ milter-greylist.

Grey listing is a wonderful spam filtering technique, which uses a behavior trick spammers never resend a message when they get a temporary error, whereas real MTA do. The idea is to refuse any mail on first attempt, and accept it after some time has elapsed.

milter-greylist is a stand-alone milter written in C that implement grey listing.

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