> mmm, 10+ minutes elapsed - and 57448 has neither timed out nor
> noticed that 57451 died.  Or sent status, but then it should
> have said *somthing* more.  I wonder if it crashed (as seen in
> one previous event) and 57448 didn't see it?

I have the same exact debug output from exim d+all -M message_id on my FreeBSD 
13 servers.
Those stuck processes will hang around for days if you don’t kill them and the 
exim queue run will not process those stuck messages due the spool file being 
locked by the stuck process.
 
I disabled TLS for the outgoing SMTP transport on one server and there are no 
more stuck processes. 

> Aha.  there was a recent for affecting FreeBSD which might
> be relevant:  https://bugs.exim.org/show_bug.cgi?id=2831 
> <https://bugs.exim.org/show_bug.cgi?id=2831>

Actually this patch has been applied to the FreeBSD port when it was updated to 
4.95. See:

https://cgit.freebsd.org/ports/commit/mail/exim?id=99c5dc1049a23570016dcb5ac44882e408800622
 
<https://cgit.freebsd.org/ports/commit/mail/exim/files/debian?id=99c5dc1049a23570016dcb5ac44882e408800622>

It’s the 
mail/exim/files/debian/75_38-Convert-all-uses-of-select-to-poll.-Bug-2831.patch 
file.

I also added the following patches to the exim port and recompiled it:

BSD: fix resource leak: 
https://git.exim.org/exim.git/commit/c57309a50444d858c0a2dc1581846a850d78a9ad 
<https://git.exim.org/exim.git/commit/c57309a50444d858c0a2dc1581846a850d78a9ad>
Ensure server tls close alert not delayed: 
https://git.exim.org/exim.git/commit/fc624b8cb4c3312d7450dfa86adfa3fe8dd9cbeb 
<https://git.exim.org/exim.git/commit/fc624b8cb4c3312d7450dfa86adfa3fe8dd9cbeb>

I thought those patches have something to do with TLS and might fix the 
problem. But they didn't fix the issue.

I usually can find a few messages per day on a server so if you need me to test 
a patch, please let me know.

Thanks,

Michael

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