Bug#1004740: exim4: SIGSEGV (maybe attempt to write to immutable memory) when sending a mail; message frozen

[Vincent Lefevre]

On 2022-02-01 14:44:21 +0100, Vincent Lefevre wrote:
> 2022-02-01 14:23:23 1nEt2b-0008jG-97 SIGSEGV (maybe attempt to write to immutable memory)
> 2022-02-01 14:23:23 1nEt2b-0008jG-97 Delivery status for xxx at yyy: got 0 of 7 bytes (pipeheader) from transport process 35015 for transport smtp
> 
> 2022-02-01 14:23:23 1nEt2b-0008jG-97 == xxx at yyy R=dnslookup T=remote_smtp defer (-1): smtp transport process returned non-zero status 0x000b: terminated by signal 11
> 2022-02-01 14:23:23 1nEt7z-00096o-IX <= <> R=1nEt2b-0008jG-97 U=Debian-exim P=local S=783
> 2022-02-01 14:23:23 1nEt2b-0008jG-97 Frozen
> 2022-02-01 14:23:23 1nEt7z-00096o-IX => vlefevre <postmaster at cventin.lip.ens-lyon.fr> R=local_user T=maildir_home
> 2022-02-01 14:23:23 1nEt7z-00096o-IX Completed
> 2022-02-01 14:23:23 End queue run: pid=35012
> 2022-02-01 14:28:19 Start queue run: pid=35460
> 2022-02-01 14:28:19 1nEt2b-0008jG-97 Message is frozen
> 2022-02-01 14:28:19 End queue run: pid=35460
> [...]
> 
> The consequence is that the mail is not sent, there are no retries,
> and the end user is not warned. So, from the end user point of view,
> the message is *silently lost*.

Some clarification: by "end user", I mean the author of the message.
There is an error message sent to postmaster, but not to the address
of the author of the message.

-- 
Vincent Lefèvre <vincent at vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)