ISPsystem.com Forums - Exim mail sending problem

Hi,

exim basically runs well on my server - mails get sent normally. Since a few days now without updates or config change some mails get stuck in the queue for days. But only some and there don't seem to be errors with the receiver server or account anyhow.

After walking through the log i found this:

Code:

2012-11-11 04:50:48 1TWC7z-002LAM-9d == xxx@aaa.ac.uk R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:48 1TVoKj-001ePE-8N == xxx@aaa.ac.uk R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:48 1TWMOO-002dDO-7z == xx.yy@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:48 1TVS5I-000pF6-RS == xx.yy@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:48 1TQzqp-001mPp-3b == xx@aaa.de R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TWN87-002eKT-7G == m.aaa@t-eee.de R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TRmVd-003CC3-Dq == h.aaa@t-xxxx.de R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TWvEv-003dzI-8K == sssss@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TVoOh-001eUd-5s == eeee@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TWvOn-003e5C-42 == ss.sss@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

2012-11-11 04:50:49 1TWC9E-002LB7-BS == aaxxxa@gmail.com R=dnslookup T=remote_smtp defer (-1): "none" is not a valid IP address for the "interface" option for remote_smtp transport

I've checked /etc/exim/domainips but that looks fine. Also i can't find anything in the config that shows a problem regarding a sender interface.

Basically mail continues to work well it's just sometimes these messages appear and only for a few days now.

Any idea where this may come from?