> I recently became aware that my home mail server(Debian 2.2 -
> http://naasking.homeip.net) hasn't been delivering mail. It's been working
> fine for months and just stopped recently. I can still recieve mail, but
> sending never gets through(local mail does get through though, ie. if I send
> an e-mail to myself). I can telnet into the smtp port(from outside), so it's
> not that. When trying to
> send a simple test message to two of my e-mail addresses, I get the
> following entries in /var/log/exim/mainlog:
'No route to host' is returned when an ICMP Network Unreachable packet is
received - normally.
Your ISP, or their upstream, is probably blocking port 25 access to the outside
world to try to prevent SPAM.
I suggest you talk to them to find out if this is the case. Find a machine that
you can normally ssh or telnet to, on port 80 if nothing else, and then try port
25 with telnet. If the behaviour is different, then that is your problem.
Your ISP should explain their policy to you, offer to remove the filter if you
agree not to SPAM or whatever - or you can move ISPs.
Peter
