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* Add milter-greylist, a milter for sendmail written in C that implementsPav Lucistnik2004-05-271-0/+11
grey listing. Grey listing is a 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. PR: ports/67252 Submitted by: Cyril Guibourg <aragorn+ports@teaser.fr> Notes: svn path=/head/; revision=110144