On 2024-12-24 at 19:27:29 UTC-0500 (Tue, 24 Dec 2024 19:27:29 -0500
(EST))
Wietse Venema via Postfix-users <wie...@porcupine.org>
is rumored to have said:
Bill Cole via Postfix-users:
[...]
There's nothing technically wrong here, at least not that is
diagnosable
from your end. MS just does strange things.
They did not send EHLO after STARTTLS completed, so this is not
normal.
I should have rather said that every SMTP command that they tried
completed normally.
I've seen a modest stream of do-nothing connections from MS machines
which don't seem in any way related to difficulties with any email. The
same MXs getting such traffic also get substantial mail from MS systems.
I have a suspicion about what they're maybe trying to do but it would be
slanderous to share that.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo@toad.social and many *@billmail.scconsult.com
addresses)
Not Currently Available For Hire
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