https://bugs.exim.org/show_bug.cgi?id=2665
--- Comment #18 from Joseph Diffin <Joseph.diffin@???> ---
(In reply to Jeremy Harris from comment #17)
> The first of the two smtp connections shown is taking a timeout
> "after end of data" - and it is after 10 minutes, which is the default value
> for the relevant option.
>
> We can't tell if the data (and terminating dot) made it to the far end
> (and the remote MTA choked), or our kernel wasn't able to send it on the
> wire (cf. Phil's point in comment 10). A packet capture would show for sure,
> but care over data redaction would be needed before sharing one here
> (the TCP headers for the one connection only, plus ICMPs. And maybe
> obfuscating IP addresses and MAC addresses too).
>
> The remote MTA log might (or not) be helpful. It isn't an Exim.
Thanks for all the help so far - we're requesting packet captures to be set up
at the customer end and at our end. I'll update the ticket as soon as we have
put it place and analysed the outputs
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