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List:       postfix-users
Subject:    Re: Preferred/maintained greylisting options?
From:       Chris Wedgwood <cw () f00f ! org>
Date:       2020-05-26 22:37:58
Message-ID: 20200526223758.GA9293 () aether ! stupidest ! org
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> Contrary to someone else's experience related in this thread, I
> still see a significant amount of spam that greylisting blocks, and
> extremely few spammers retry and get through.

I concurn, as reported, I curently see greylisting reduce spam by a
factor of 4.

> I have only had one known case (i.e. someone said they were
> expecting an email that they didn't receive) in a very long time
> where a legitimate email was greylisted and the sending server did
> not retry, and that was recently from an outlook365 server.

Aliexpress is one perplexing offender I've had to deal with.

The send badly formed messages, retry aggressively for a few seconds
then never again so messages get lost.

I've not been able to reach anyone there.
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