zimbra smtp could not connect from outside.

[Mrugesh Shah]

Hello All,

I am using Zimbra since 2 years and It was working fine before few days. Suddenly users are not able to send emails and also when I configure Outlook, It says Could not conect to outgoing server.

I am putting my debug below:

[root@mail ~]# telnet mail.xxx.com 25

Trying 216.250.xxx.xxx...

Connected to mail.xxx.com.

Escape character is '^]'.

220 mail.xxx.com ESMTP Postfix

^]

[root@mail ~]# telnet mail.xxx.com 110

Trying 216.250.xxx.xxx...

Connected to mail.xxx.com.

Escape character is '^]'.

+OK POP3 ready

^]

[root@mail ~]# lsof -i:25

COMMAND   PID USER   FD   TYPE    DEVICE SIZE/OFF NODE NAME

master  13200 root   13u  IPv4 468524129      0t0  TCP *:smtp (LISTEN)

[root@mail ~]# lsof -i:110

COMMAND   PID   USER   FD   TYPE    DEVICE SIZE/OFF NODE NAME

nginx   11721 zimbra    8u  IPv4 468504138      0t0  TCP *:pop3 (LISTEN)

nginx   11722 zimbra    8u  IPv4 468504138      0t0  TCP *:pop3 (LISTEN)

nginx   11723 zimbra    8u  IPv4 468504138      0t0  TCP *:pop3 (LISTEN)

nginx   11724 zimbra    8u  IPv4 468504138      0t0  TCP *:pop3 (LISTEN)

nginx   11725 zimbra    8u  IPv4 468504138      0t0  TCP *:pop3 (LISTEN)

Please help me to solve this issue.

--

Thanks & Regards,
Mrugesh C Shah