Re: [exim] malfunctioning email delivery after upgrade to Ex…

On 04/09/2022 22:09, Ján Lalinský via Exim-users wrote:
> ==rcpt@??? R=xxx (-36): host lookup for <imap_server> did not
> complete (DNS timeout?)
>
> There is no problem with DNS resolution of the relevant domains on those
> MX servers whatsover, judging by using dig and host command in shell.

But judging by the error from Exim, there is. Assuming that this
name-resolution should have used DNS, of course.

> <mid> no immediate delivery: more than 10 messages received in one
> connection

That's not an error, only informative.
See the main config option smtp_accept_queue_per_connection.

> We tried
> settings
>
> smtp_accept_max_per_connection = 100
> smtp_accept_queue_per_connection = 100
>
> in exim.conf, but to no avail.

Then your daemon is not running that configuration.
Did you restart it, after that edit?
--
Cheers,
Jeremy