kurt@??? wrote: > Starting Saturday one of my servers stopped sending outgoing mail.
> Today I noticed the server had some 20,000 messages to deliver.
> Every entry in exim_mainlog looks like this:
>
> 2004-05-24 12:51:37 1BRwA9-0005U5-2S == kurt@??? R=lookuphost
> T=remote_smtp defer (-53): retry time not reached for any host
>
> I've restarted the service. When I send email to an account on the
> server, it's delivered immediately. The problem seems to be with the
> outgoing queue.
>
> Any suggestions?
Look in the logs, see why the message didn't get delivered (exigrep is good
for this). My first guess would be that your DNS resolution is broken - but
that's just a guess. Maybe someone blocked smtp outbound on the firewall...
