Comment 2 for bug 1832740

Sorry, I didn't get around to replying earlier. You are right, smtp is
going slow and it seems thats causing the problem.

Sep 26 06:33:30 2019 (22952) <email address hidden> smtp to qemu-devel for 1053 recips, completed in 328.854 seconds

It looks like messages go through much much faster when exim isn't
already busy with a lot of other messages. But generally, I can't expect
to get exim to reliably accept 1000 messages much faster. So, I think
the init script/settings needs to wait longer and not report success
when its actually failed.