Need help from people that know e-mail servers well

[jensked]

Hi y'all.

We recently changed our e-mailserver. Just a pop-server, no exchange stuff.

When we mail to @skynet.be (or when some on a Skynet internet line mail through relay.skynet.be), we always get this message:

Where's the problem? Not on our smtp server, because on Skynet internet-lines they also have the same problems, when mailing to any adress.


I did this test, but I don't know that much about emailing.
http://www.mxtoolbox.com/diagnostic.aspx?HOST=pop.kortenberg.be

Anybody?

----- The following addresses had permanent fatal errors -----
<xxxx@skynet.be>
(reason: 553 #5.1.8 Domain of sender address <xxxx@kortenberg.be> does not exist)

----- Transcript of session follows -----
... while talking to in.mx.skynet.be.:
>>> >>> MAIL From:<xxxxx@kortenberg.be> SIZE=1523
<<< 553 #5.1.8 Domain of sender address <xxxx@kortenberg.be> does not exist
501 5.6.0 Data format error

Reporting-MTA: dns; sif.is.scarlet.be
Received-From-MTA: DNS; ip-xxxx.dsl-static.scarlet.be
Arrival-Date: Wed, 20 Feb 2008 14:49:59 +0100

Final-Recipient: RFC822; xxxx@skynet.be
Action: failed
Status: 5.1.3
Diagnostic-Code: SMTP; 553 #5.1.8 Domain of sender address <xxxx@kortenberg.be> does not exist
Last-Attempt-Date: Wed, 20 Feb 2008 14:50:00 +0100

 

[Zuhaib]

Have you checked the MX settings on your domain? It seems like on the test and the log that it cant find the domain.
Who is providing this E-Mail? Your server guys?