Passive Aggressive Spam Filtering

Passive Aggressive Spam Filtering: "

Using OpenBSD and spamd for spam filtering and grey-listing is very old news but there are a few situations where it becomes politically and technically challenging to run in production. Here was a simple yet (and in no way the best method) of using PF and some friends on the internet to help 'slow the flow' of offal from the Internet into your mail server.

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