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Thread: POP3 Issue

  1. #1
    Join Date
    Aug 2006
    Posts
    49
    Rep Power
    10

    Question POP3 Issue

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

    We are running:
    Code:
    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:
    Code:
    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:
    Code:
    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!

  2. #2
    Join Date
    Aug 2006
    Posts
    49
    Rep Power
    10

    Default

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

    Code:
    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                  :::*

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