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Hi I have Bind dns server/web server and mail server. I have been facing one problem while sending mails. Some of the mails come back with error saying a valid ...
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  1. #1
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    PTR entries for mail server


    Hi

    I have Bind dns server/web server and mail server. I have been facing one problem while sending mails. Some of the mails come back with error saying a valid PTR record not found. My setup is as below:

    DNS server/web server
    ns1.abc.com x.x.x.34
    ns2.abc.com x.x.x.35

    mail server
    x.x.x.37

    total 5 domains are hosted on above dns server/web server and mail server. Please guide me on proper DNS entry and PTR record for each domain. I checked on net but got confused.

  2. #2
    Linux Engineer jledhead's Avatar
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  3. #3
    Linux Guru Lazydog's Avatar
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    In your reverse zone you need to add the ip address like so;

    Code:
    37        PTR    mailserver.domain.com.

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    Robert

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  4. #4
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    But my mail server host name is mail.xyz.in, then what would be the PTR in zone file ?
    Also do I need to have separate reverse zone files for all 5 domains ?

    My detailed setup is as below:

    ns1.abc.com x.x.x.34
    ns2.abc.com x.x.x.35

    mail hosting server is zimbra collaboration suite and the hostname is -> mail.xyz.in and IP address is x.x.x.37

    5 domains:

    abc.com
    xyz.in
    test.com
    test.org
    ghi.com

    The name server is also web server and handles all above 5 domains as far as dns and http is concerned. so all domains have single IP address i.e.x.x.x.34 & 35
    Mail server handles above 5 domains and have IP address x.x.x.37

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