[cobalt-users] Email Problem

["Bryan - Utopian Web Productions" <bryan@xxxxxxxxxxx>]

For some odd reason I'm receiving bounced mail from certain people. The
following is the result of the rejected message. I've checked the DNS and
everything seems to be correct, but I'm not 100% sure why this is happening.
Can anyone shed some light on it?

alpha.gheek.com is the name of the server, is the Name Server, is a virtual
site, has an entry in the DNS, and has a Automatic Reverse Address Record.
The only thing I could think of (ALL day trying) is that Network Solutions
doesn't know who it is. I performed a nslookup from an external site:

nslookup alpha.gheek.com
Server:  ns.gheeks.com
Address:  208.155.68.165

Non-authoritative answer:
Name:    alpha.gheek.com
Address:  66.33.16.124

What does the "Non-authoritative answer" mean? Some servers are accepting
the email, but others are not.


   ----- The following addresses had permanent fatal errors -----
bryan@xxxxxxxxxxx
    (reason: 501 <root@xxxxxxxxxxxxxxx>... Sender domain must exist)

   ----- Transcript of session follows -----
... while talking to uwebpro.com.:
>>> MAIL From:<root@xxxxxxxxxxxxxxx> SIZE=117
<<< 501 <root@xxxxxxxxxxxxxxx>... Sender domain must exist
501 5.6.0 bryan@xxxxxxxxxxxxxx Data format error

____________________

Bryan