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Thread: DNS ERROR resolving MX for mail.domain.com

  1. #1
    csoliss is offline Active Member
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    Angry DNS ERROR resolving MX for mail.domain.com

    hi, I am trying to install zimbra Colaboration suite 5.0, i readed a lot threads aun i couldn't find my answer...


    this is my configuration:
    /etc/network/interfaces
    auto lo
    iface lo inet loopback
    auto eth0
    iface eth0 inet static
    address 192.0.0.121
    network 192.0..0.0
    netmask 255.255.255.0
    broadcast 192.0.0.255
    gateway 192.0.0.150

    /etc/resolv.conf
    nameserver 192.0.0.151
    nameserver 216.xxx.xxx.5
    nameserver 216.xxx.xxx.6

    /etc/hosts
    127.0.0.1 localhost
    192.0.0.121 mail.domain.com mail
    # The following lines are desirable for IPv6 capable hosts
    # ::1 ip6-localhost ip6-loopback
    # fe00::0 ip6-localnet
    # ff00::0 ip6-mcastprefix
    # ff02::1 ip6-allnodes
    # ff02::2 ip6-allrouters
    # ff02::3 ip6-allhosts

    /etc/hostname
    mail.domain.com

    server DNS (internal) (cobalt)
    (A) mail.domain.com 192.0.0.121
    (PTR) 192.0.0.121 mail.domain.com
    (MX) mail.domain.com mail.domain.com

    Server DNS (external)
    domail.com 200.xxx.xxx.85

    MX Record:
    Hostname ( Alias): mail.domail.com
    A Record: IP 200.xxx.xxx.92
    Priority: 10

    when I do nslookup from KLOTH.NET - NSLOOKUP - DNS Look up - Find IP Address
    >domain.com
    DNS server handling your query: 216.xxx.xxx.5
    DNS server's address: 216.xxx.xxx.5#53

    Name: domain.com
    Address: 200.xxx.xxx.86
    >domain.com (query MX)
    DNS server handling your query: 216.xxx.xxx.5
    DNS server's address: 216.xxx.xxx.5#53
    domain.com mail exchanger = 10 mail.domain.com.

    >mail.domain.com
    DNS server handling your query: 216.xxx.xxx.5
    DNS server's address: 216.xxx.xxx.5#53

    Name: mail.domain.com
    Address: 200.xxx.xxx.92


    but when I go install:

    Setting defaults...

    DNS ERROR resolving MX for mail.agbnielsen.com.ve
    It is suggested that the domain name have an MX record configured in DNS


    what happend?

  2. #2
    mmorse's Avatar
    mmorse is offline Moderator
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    server DNS (internal) (cobalt)
    (MX) mail.domain.com mail.domain.com
    Don't know if you meant to say domain.com > mx mail.domain.com.

    If it's just tacking "mail." on the front you should be able to ignore that for now, and simply create a just "agbnielsen.com.ve' domain after install.

  3. #3
    csoliss is offline Active Member
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    Quote Originally Posted by mmorse View Post
    Don't know if you meant to say domain.com > mx mail.domain.com.

    If it's just tacking "mail." on the front you should be able to ignore that for now, and simply create a just "agbnielsen.com.ve' domain after install.
    I meant that mail.domain.com is the MX register of mail.domain.com

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by csoliss View Post
    I meant that mail.domain.com is the MX register of mail.domain.com
    You need a Split DNS set-up.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    webman's Avatar
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    Providing the Zimbra server can resolve mail.domain.com to its internal IP address (via cobalt, the internal DNS server) then I don't think you will need to use split DNS set up on ther Zimbra server.

  6. #6
    csoliss is offline Active Member
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    I think the same, because I can send messages amoung internal clients, the problem is for receive mail from the external mail (gmail, yahoo, hotmail, etc)
    so, what can i do?


    thank
    Last edited by csoliss; 04-29-2008 at 05:46 AM.

  7. #7
    webman's Avatar
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    I thought your problem was just about the suggestion about the DNS MX record when you installed Zimbra?

    If you are not receiving any incoming mail then the problem is probably down to incorrectly-configured external DNS settings for the domain, or if you're using NAT (which it seems you are) port 25 may not be open on your firewall and forwarded to the correct IP address.

  8. #8
    csoliss is offline Active Member
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    this is my firewall configuration

    port 25 Protocol: SMTP
    incoming: from any to 192.0.0.121(zimbra server IP) 192.0.0.151 (other mail server)
    outcoming from any to any

    NOTE: the other mail server have other domain.

  9. #9
    webman's Avatar
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    A TCP port can only be forwarded to one address - which one - .121 or .151? If it's not forwarded to the Zimbra server, then the server it is forwarded to must be configured to deliver messages for the Zimbra-handling domain to the Zimbra server.

  10. #10
    csoliss is offline Active Member
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    the situation is that i already have a mail server working with other domain name in other ip, but both use the same firewall, what can I do?

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