MRob via Exim-users <exim-users@???> (Sa 27 Feb 2021 21:38:09 CET):
> Hello,
> I'm getting lots of these in exim log:
> 2021-02-25 04:31:15.790 [19189] SSL_write: (from
> mail-pu1apc01hn2214.outbound.protection.outlook.com (APC01-PU1-
> obe.outbound.protection.outlook.com) [52.100.183.214]:42879) syscall:
> Connection reset by peer
I assume, that a connection coming *from* outlook to you. They (outlook)
seem to have the bad habit to forcefully tear down the connection as
soon as they received your "250 OK". They don't send a QUIT, nor do they
perform a regular SSH "good bye" handshake. They just behave rude.
Your server tries to bring the connection down, but all your side's
politeness is *rejected* by the other (outlook) side.
If I remember well, then in newer versions we supress the annoying (but
legite) log messages at that phase of the connection.
> I also get plenty of successful mail from outlook.com so its confusing. But
> some remote sender using microsoft reported getting mail returned due to
> expired retries/unable to connect.
That can be related, but doesn't have to be related.
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
--
SCHLITTERMANN.de ---------------------------- internet & unix support -
Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} -
gnupg encrypted messages are welcome --------------- key ID: F69376CE -
