POP3 Issue

[zagman76]

Hello - I tried searching, but could not find a similar issue.

We are running:

Release 5.0.18_GA_3011.UBUNTU8 UBUNTU8 FOSS edition

and are having a problem with POP3:

When we moved from LAB to production, everything worked just fine. When we changed the hostname from mail.example.com to our proper server name (following the instructions here ZmSetServerName - Zimbra :: Wiki) and since then, no POP3 clients can connect over port 110. We've tried telnetting on port 110 from an off-site location, to no avail. When we telnet from the server itself, we get:

zimbra@zimbra:/$ telnet mail.ourserver.com 110
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
+OK mail.ourserver.com Zimbra POP3 server ready

everywhere else it's:

C:\>telnet mail.ourserver.com 110
Connecting To mail.ourserver.com...Could not open connection to the host, on
port 110: Connect failed

Externally, we can connect via SSL over POP3 with no problems (aside from certificate mismatch errors, which we know that we just need to re-create / purchase a cert).

Again, this only started happening after changing the server name. Any assistance would be greatly appreciated. If you need any additional info - please let me know!

Thanks!

[zagman76]

In addition, it is listening on port 110, just not on the public IP address (and on ipv6 for some reason...)

zimbra@zimbra:~/jetty/etc$ netstat -ln
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 0.0.0.0:12320           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:12321           0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:7780            0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:389           0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:10024         0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:10025         0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:7306          0.0.0.0:*               LISTEN
tcp        0      0 127.0.0.1:7307          0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:3310            0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:465             0.0.0.0:*               LISTEN
tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN
tcp6       0      0 :::7072                 :::*                    LISTEN
tcp6       0      0 :::7777                 :::*                    LISTEN
tcp6       0      0 :::993                  :::*                    LISTEN
tcp6       0      0 :::995                  :::*                    LISTEN
tcp6       0      0 :::5222                 :::*                    LISTEN
tcp6       0      0 :::5223                 :::*                    LISTEN
tcp6       0      0 :::7335                 :::*                    LISTEN
*tcp6       0      0 127.0.0.1:110           :::*
LISTEN *
tcp6       0      0 :::143                  :::*                    LISTEN
tcp6       0      0 :::80                   :::*                    LISTEN
tcp6       0      0 :::7025                 :::*                    LISTEN
tcp6       0      0 :::5269                 :::*                    LISTEN
tcp6       0      0 :::22                   :::*                    LISTEN
tcp6       0      0 :::443                  :::*                    LISTEN
tcp6       0      0 :::10015                :::*                    LISTEN
tcp6       0      0 :::7071                 :::*                    LISTEN
udp        0      0 0.0.0.0:514             0.0.0.0:*
udp        0      0 0.0.0.0:12321           0.0.0.0:*
udp        0      0 OUR IP:123     0.0.0.0:*
udp        0      0 127.0.0.1:123           0.0.0.0:*
udp        0      0 0.0.0.0:123             0.0.0.0:*
udp6       0      0 fe80::219:21ff:fe4b:123 :::*
udp6       0      0 ::1:123                 :::*
udp6       0      0 :::123                  :::*