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Thread: mxtoolbox Reverse DNS FAILED! This is a problem..

  1. #1
    iceruam is offline Special Member
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    Default mxtoolbox Reverse DNS FAILED! This is a problem..

    I still do not know where or how to fix revers DNS issues, can someone please point me to where I can find the solution to this problem?
    I still some mail returned because of this issue.
    Thanks

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by iceruam View Post
    I still do not know where or how to fix revers DNS issues, can someone please point me to where I can find the solution to this problem?
    I still some mail returned because of this issue.
    This has been covered many times in the forums, ask your ISP about your reverse DNS.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    iceruam is offline Special Member
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    They do not support reverse dns was their response, so now what?

  4. #4
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by iceruam View Post
    They do not support reverse dns was their response, so now what?
    Then you're stuck without a reverse DNS. You can either change your ISP (to one that provides a reverse DNS), live with the situation or relay through another server.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    iceruam is offline Special Member
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    RIgght...there is only one isp in this area, so yeah I am stuck because I have no idea how to relay through another server

  6. #6
    phoenix is offline Zimbra Consultant & Moderator
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    Quote Originally Posted by iceruam View Post
    RIgght...there is only one isp in this area, so yeah I am stuck because I have no idea how to relay through another server
    Then read topic in the Admin Guide or search the wiki and forums for this topic and read the many threads/articles on the subject.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  7. #7
    Brad_C is offline Loyal Member
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    Quote Originally Posted by iceruam View Post
    RIgght...there is only one isp in this area, so yeah I am stuck because I have no idea how to relay through another server
    Just to give you some ideas. I run our company mail server on a machine at home and behind my domestic ADSL. I have no control over the reverse on this IP address, so I pay ~$100/yr for a virtual server elsewhere and run exim on that. My Zimbra server connects to the virtual server using an OpenVPN link, and relays all outbound mail through that VDS.

    I also have the VDS set up as a backup MX for my main Zimbra server, but that is another whole kettle of fish and admin workload.

    It's not hard to set up. Zimbra setup for relaying is in the Wiki and is a piece of cake. The VDS end was not difficult either. Pretty much a base Debian install with an extra config tweak to allow relaying from the VPN subnet. The VDS provider set up the reverse for me when they configured the machine, so it all "just works".

    I don't recommend or endorse the way I run things but with only 5 users and a local BESX instance it works for us.

  8. #8
    konetkar500 is offline New Member
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    To make any changes to your rDNS, you will need to contact your ISP or if you host your own DNS (rare) you will adjust it yourself. You will not be able to do this in your DNS control panel unless your ISP also hosts your DNS and gives you the functionality to add your own rDNS records.

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