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Dear all, our problem is that certain MX/DNS resolutions are not working properly for external users trying to send us email. For example, mail users at yahoo.com are getting rejected ...
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  1. #1
    Just Joined!
    Join Date
    Sep 2005
    Posts
    14

    DNS/MX issue


    Dear all,

    our problem is that certain MX/DNS resolutions are not working properly for external users trying to send us
    email.

    For example, mail users at yahoo.com are getting rejected when trying to send an email to us at "123@example.com".
    This mail is rejected as the user "123@WWW.example.com" as
    not a valid email address.
    It appears that YAHOO is resolving our CNAME and although
    people are trying to send to @example.com it is being re-
    solved to @WWW.example.com which our mail server rejects.

    Amazingly mails for example from hotmail.com, gmail.com or
    mail.com are working!

    Would be great to find here a solution and/or an expla-
    nation for this instance.

    THX, Rainer

  2. #2
    Super Moderator Roxoff's Avatar
    Join Date
    Aug 2005
    Location
    Nottingham, England
    Posts
    3,932
    I'm not sure how your mail configuration is set up, but you should try doing this:

    Code:
            IN    MX    0    mail.example.com.
    mail    IN    A          x.x.x.x
    of course, subsituting your real IP address as x.x.x.x, and using your real domain and mailserver name.

    And dont forget it can take several hours for the changes to be seen by some ISPs.
    Linux user #126863 - see http://linuxcounter.net/

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