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Thread: POP3 Issue

  1. #1
    zagman76 is offline Active Member
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    Aug 2006
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    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
    zagman76 is offline Active Member
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    Aug 2006
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    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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