Re: [exim] 15s delay after SMTP authentication

On Thu, Dec 23, 2021 at 09:16:02AM +0100, Leon Fellows via Exim-users wrote:
> 2021-12-23 08:57:27.464 [196843] SMTP connection from [5.45.110.153]:39612
> I=[5.45.110.153]:587 (TCP/IP connection count = 1)
> 2021-12-23 08:57:42.731 [196847] 1n0Iyd-000pCx-J3 <= fellows@???
> H=mx.fairtragen.de (thunderleon) [5.45.110.153]:39612 I=[5.45.110.153]:587
> P=esmtpsa L.- X=TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256
> CV=no A=plain_server:fellows@??? S=563 M8S=0 RT=0.001s
> id=20211223085727.196846@??? T="test Thu, 23 Dec 2021 08:57:27
> +0100" from <fellows@???> for leon@???
...
> So there is the SMTP connection at 08:57:27
> then 15s nothing (!?)

Looks like a resolver's timeout, probably while resolving 5.45.110.153
to hostname.

> What could I do to better debug this?

Try to run with -d-all+dns. If it does not help, run Exim with -d+all.
--
Eugene Berdnikov