hi,

After configuring postfix MTA on my server, not able to verify it with telnet command. Even other parameters are set accordingly. Still no success.


[root@node1 ~]# uname -a
Linux node1.cluster.com 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
[root@node1 ~]#


[root@node1 ~]# netstat -an | grep :25
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
[root@node1 ~]#


[root@node1 ~]# sestatus
SELinux status: enabled
SELinuxfs mount: /selinux
Current mode: permissive
Mode from config file: disabled
Policy version: 24
Policy from config file: targeted
[root@node1 ~]#


[root@node1 ~]# service iptables status
iptables: Firewall is not running.
[root@node1 ~]#


[root@node1 ~]# telnet 192.168.1.51 25
Trying 192.168.1.51...
telnet: connect to address 192.168.1.51: Connection refused

Did you actually START the postfix service????

yes, its running

[root@node1 ~]# service postfix status
master (pid 13970) is running...

Ok...and did you follow the basic postfix guide, and tell the system what interface to listen on? I notice it's only listening on 127.0.0.1...and you're trying to telnet to a different address.
http://www.postfix.org/BASIC_CONFIGURATION_README.html

Change the "inet_interfaces" directive to be ALL, or the address of your active interface.

1 members found this post helpful.

iptables -L
iptables -F INPUT
iptables -F OUTPUT
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT

If its not a configuration issue, check the firewall.

He already did that, and posted in the first post...iptables isn't running at all, neither is SELinux.