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Problem with bounces to subdomain only account w/o local mail exchanger

Discussion in 'E-mail Discussions' started by thobarn, Jul 20, 2010.

  1. thobarn

    thobarn Well-Known Member

    Apr 25, 2008
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    I am having a problem with the email bounces to a subdomain only account hosted on the server with no local mail exchanger. I will appreciate if anyone can offer some insight.

    First some info that may be required to understand the issue.

    There are two IPs assigned to server both with rDNS setup:
    venet0:0 a.b.c.56
    venet0:1 a.b.c.57 (Main shared virtual host IP, main ethernet device)

    DNS records has an A entry: IN A a.b.c.57

    There is also a corrosponding entry in's DNS records: IN A a.b.c.56
    vps IN A a.b.c.57

    WHM >> Main >> Account Information >> List subdomains show:

    There is an accout hosted that is a subdomain only, say, The email for this account is handled by the remote exchanger where the is hosted so is setup as such. In its DNS records there is only NS records, which point to remote DNS servers, and an A entry: IN A a.b.c.57

    For email routing of the domain "Remote Mail Exchanger" is selected.

    This account has an application in which the visitors can register and a confirmation email is sent to the account holder and the registrant. This works fine. However if the registrant provides a non-existent email address then a bounce message is queued in the mail queue.

    from [bounce]
    received from mailnull by

    where the subdoma is the name of the account of

    Any ideas how can I resolve this issue? Thanks.

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