Help Needed: My RHEL5 box suddenly stopped accepting e-mails
Bohdan Sydor
bohdan at harazd.net
Sat May 7 20:27:24 UTC 2011
On 05/07/2011 10:09 PM, Mun wrote:
> I get "connection lost" or "Connection timed out"; depending on the computer
> I use to run telnet.
> The "connection lost" is what my Windows XP box returned; and the
> "Connection timed out" is what
> another Linux box returned.
Please log in as root and run the following commands:
service sendmail status
chckconfig --list sendmail
netstat -ntlp | grep :25
iptables-save
grep -v '^#' /etc/hosts.{allow,deny}
We'll be able to see which process is listening on smtp port and if it's
not being blocked by either the packet filter, nor tcp_wrappers.
--
regards
Bohdan Sydor
www.sydor.net
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