On 22/08/2023 09:17, Mark Elkins via Exim-users wrote:
> I'm looking for advice on Grey Listing vs outlook.com's behaviour of retrying to send from multiple SMTP relays.
If you can identify a feature common to all such connections, use that rather
than the remote-ip in your greylist DB tag. Also, if you know the always retry
like real MTAs should (and some spammers don't), you may as well whitelist them.
Or, autobuild a DB of known-retrier IPs, and use that to whitelist.
--
Cheers,
Jeremy
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