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[Alex Hanselka <alex AT opennicproject.org>]

Hey all,

I was informed today of an issue with my mail server that was preventing
mails from being delivered. It was returning a 4xx error so things
should retry at some point. Thanks to Jeff for pointing it out to me.

Turns out the greylisting daemon had crashed and postfix doesn't like
that. I didn't notice because some mails get to skip the greylisting
service depending on various factors. Super sorry I didn't notice.

--Alex