On Thu, 7 Apr 2022, tt-admin via Exim-users wrote:
>
>> Ah. If it is a mail gateway, the question might be whether their gateway
>> starts to send the message on to their mail server (cut-through delivery)
>> or not.
>
>> Does the Symantec Messaging Gateway advertise PIPELINING and do you use it
> ?
>
>
> Yes, the remote gateway does advertise pipelining. As far is i remember,
> exim does youse pipelining as a default when sending e-mails. I need to ask
> if they forward their mail internally.
You can disable pipelining when sending to specific hosts, with
hosts_avoid_pipelining
>> -----Ursprüngliche Nachricht-----
>> Von: Exim-users [mailto:exim-users-bounces+tt-admin=intranett.de@exim.org]
>> Im Auftrag von Evgeniy Berdnikov via Exim-users
>> Gesendet: Mittwoch, 30. März 2022 19:56
... ...
>> The question is why server has dropped connection. Probably this
>> connection was timed out -- on the server's side, not on the client's one.
>> Traffic dump from both ends could make this situation clean.
I think that this is the next step ...
"pcap" is the string to search documentation for.
--
Andrew C. Aitchison Kendal, UK
andrew@???
