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Thread: Listening on ipv6 only?

  1. #1
    Join Date
    Mar 2011
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    Default Listening on ipv6 only?

    Running Zimbra 7.1.0 on ubuntu 8.04 x64
    Running SSL IMAP on 993, SSL SMTP on 465.

    When doing netstat -tulpn|grep 993 I'm getting:

    tcp6 0 0 :::993 :::* LISTEN 7455/java

    Does this mean that Zimbra listens on ip6 993 only? How can it be? Intended or a bug?

    I don't even have IPv6 address assigned to any interface.

  2. #2
    Join Date
    Jun 2011
    Rep Power


    I am having a similar issue with Ubuntu 10.04 & an upgrade from 7.0.1 to 7.1.1.
    After the upgrade, zimba only listens on IPv6:

    sudo netstat -anltp | grep :443
    tcp6       0      0 :::443                  :::*                    LISTEN      5571/java
    There is one difference, my VPS does have an IPv6 address. That address is not actively in use but I would like to have it enabled for future use..

    Is there a way in which I can enable IPv4 and IPv6?

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