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Thread: ZCS cannot receive emails from Internet

  1. #1
    Xahid is offline Junior Member
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    Exclamation ZCS cannot receive emails from Internet

    I have installed Zimbra Collaboration Suit 8.0.3 with Split-DNS on Ubuntu 12.10 Server Successfully (1st time)
    Ubuntu have no built-in firewall & all ports are open for Zimbra (temp) in external firewall,
    53, 25, 110, 22, 80, 143, 443, 993, 995 ports are forwarded to Zimbra Server.
    I can Send emails from Zimbra to any email Server without any issue, but cannot receive any email from Internet, on the local domain it works fine.
    I follow this Guide for installing Zimbra (Fairly easy)
    but I don't understand, what i'm missing ?

    MX Lookup Tool Said,
    Loop detected! We were referred back to '67.228.116.162'

    Please help, Thanks.
    Last edited by Xahid; 05-03-2013 at 12:16 AM.

  2. #2
    Bill Brock is offline Outstanding Member
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    Make sure port 465 is open. And the split DNS is configured correctly. Your internal and external DNS servers should be different. So forwarding port 53 appears like the outside world is resolving on your internal DNS. Internal should point to LAN ip's and external to WAN IP.

  3. #3
    Xahid is offline Junior Member
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    As I said, All ports are open for Zimbra, & since port forwarding is causing problem, i just NAT the WAN IP to Interal LAN IP of Zimbra Server, but the problem persist.
    Ohh between I don't have external DNS server, & that's the main point of using Split-DNS so I don't have to buy Domain Name.
    please tell me it's possible to use it without buying a domain name registration.

    Thank you.

  4. #4
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by Xahid View Post
    Ohh between I don't have external DNS server, & that's the main point of using Split-DNS so I don't have to buy Domain Name.
    That isn't what a Split DNS is for, you need external DNS records otherwise nobody on the internet can send you mail.

    Quote Originally Posted by Xahid View Post
    please tell me it's possible to use it without buying a domain name registration.
    It's not possible without a domain name and valid DNS A & MX records.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  5. #5
    Xahid is offline Junior Member
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    Quote Originally Posted by phoenix View Post
    That isn't what a Split DNS is for, you need external DNS records otherwise nobody on the internet can send you mail.

    It's not possible without a domain name and valid DNS A & MX records.
    So, that's the only thing left,
    Thank you

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