Upstream: https://bugs.exim.org/show_bug.cgi?id=3047 There is already a patch proposed - I am currently testing it.
(In reply to Niels Kobschätzki from comment #0) OK, please inform me with results
*** Bug 276636 has been marked as a duplicate of this bug. ***
I have it now running for a couple of hours in production and it works. But I'd like to wait for upstream to greenlight it and see if the weekend brings any problems.
There are now two commits that address the bug. I tested only the one to appendfile.c (without the extras in exim.c) and have it working production. Commit relating to appendfile: b4e7527561f1c68b821d5cf25efe29ae63d1d434 https://github.com/Exim/exim/commit/b4e7527561f1c68b821d5cf25efe29ae63d1d434 Commit realting to acls: 35aacb69f5c839a4b77158464e401d86eb422ed6 https://github.com/Exim/exim/commit/35aacb69f5c839a4b77158464e401d86eb422ed6