Mail server changes

As of this morning I’ve enabled some of the blacklists from SpamHaus.  Anyone who has their mail rejected mailing our system will be given a url in the bounce message; as well as postmaster@gigo.com’s email address for exceptions.  Note that postmaster is never filtered here - even if we generally block their mail when they mail me as postmaster, it’ll still come through.

I’m watching the logs and looking at the rejects looking for signs of false positives.

This change in behavior is to cut down the resources it takes to fight spam - the greylisting was the primary barrier previously, but that is becoming costly.  If you want me to turn off antispam measures at the mail server level to your address or domain, let me know.

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