When you’re in the business of building the networks people need and the services they need to run on them, you may also be running a mail service. If you do, you will sooner or later need to deal with spam. This article is about how to waste spammers’ time and have a good time while doing it, using the free tools OpenBSD offers to do your greylisting and greytrapping before any content filtering. It’s fun and easy.
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