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Thread: DNS Question

  1. #1
    Join Date
    Feb 2007
    Austin, TX
    Rep Power

    Default DNS Question

    I put this in the installation forum even though I have an existing setup which was working great until 1am last night.

    My Zimbra server is also running BIND and is acting as a DNS slave server for my domain. My primary DNS service provider changed it's nameserver's IP addresses a while back and so the server, acting as a slave, was unable to update it's zone file. After the SOA expiration hit last night, it was no longer an authority for my domain. I unfortunately had /etc/resolv.conf set to only look to for DNS (yes I know that's retarded and I've fixed that).

    My question is why mail that got to the Zimbra server was unable to be delivered into the mailboxes since I had an entry for itself in the /etc/hosts file?

    Here's was /var/log/maillog was reporting. I have the replaced the customer with and our domain with

    Jul 23 00:43:18 zim1 postfix/qmgr[16449]: 34C791570725: to=, relay=none, delay=0, status=deferred (delivery temporarily suspended: Host or domain name not found. Name service error for type=A: Host not found, try again)
    Any input as to why /etc/hosts wasn't enough to satisfy postfix would be appreciated.

    Peter LeBlond
    Product Development Engineer

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Vannes, France
    Rep Power


    The simple answer is that Postfix uses DNS (as the error indicates) to lookup the server address not the hosts file.


    Acompli: A new adventure for Co-Founder KevinH.

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