On Thu, Jan 09, 2003 at 09:48:41PM -0500, Stephen Gran wrote:
This one time, at band camp, David P James said:
As you have noted, there are quite a few variables. Rule out iptables
and tcpwrappers first - from an address outside the LAN, telnet
your.host.ip 25 - if the connection times out, it's probably iptables,
if it's refused, it's either iptables or tcpwrappers. If you connect
and get the exim greeting banner, then you know that the problem is your
exim.conf.
I sshed to my brother's Redhat server and did the telnet my.host.ip 25
thing back to my server; the connection timed out. I tried a few other
ports (21, 80, 22, 110) and got a connection quite quickly.
Then apparently iptables is DROPping connections to that port - fix that
and we'll move from there.
Jumping in late, but isn't it also possible that the OP's ISP is
blocking port 25 (a common spam-fighting technique) ?