Hey, I have a strange problem with my exim4 configuration. I have a dedicated server running debian for quite a long time now, but I'm not really using it actively recently, so everything just worked due to lack of changes ;)

However, recently, my exim4 smtp stopped answering on port 25. It does not respond through localhost, as well - even though it's set to listen on any interface available.

Some things I've checked:

• ks:/home/trakos/Maildir/new# netstat -ap | grep exim
  tcp 0 0 *:smtp : LISTEN 12521/exim4

• ks:/home/trakos/Maildir/new# exiwhat

• 12521 daemon: -q30s, listening for SMTP on port 25 (IPv4)

• ks:/home/trakos/Maildir/new# cat /var/log/exim4/rejectlog

• ks:/home/trakos/Maildir/new# cat /var/log/exim4/paniclog

The queue is set for 30s only because I was running it in a non-daemon mode to see any output. Strangely enough, no suspicious output is given, netstat even shows it is listening on port 25, but still trying to telnet to it times out.

The only things that may have changed recently are:

• I've got second IP for my server

• I remember that few days ago my spamassasin crashed, and I've started it up again

So yeah, I'm really clueless about this one now :P I mean, I don't even know what could be failing here. Could someone give me some ideas what should I check next?

PS: it has uptime of 442 days, so I haven't really tried rebooting it yet ^^