Re: NDR to ONE domain only

Tech-Archive recommends: Fix windows errors by optimizing your registry

Yes, it resolves:

mail.lyo-t.com. 85172 IN A 216.178.95.166



"Kerry Brown" wrote:

At a command prompt type

nslookup mail.lyo-t.com

Does it resolve?

If it does it sounds like a firewall on their end has blocked your IP or a
range of IP's that includes yours.

--
Kerry Brown
Microsoft MVP - Windows Desktop Experience
http://www.vistahelp.ca/phpBB2/



"Mishuno" <Mishuno@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:9F29A024-EDA5-4528-A1A1-F07C8AA50076@xxxxxxxxxxxxxxxx
Hello,

We are running SBS 2003 with SP2 and Exchange with SP2. When can send and
receive email fine except for ONE domain. We can receive email from them
but
every email we send them comes back with an NDR of:

A non-delivery report with a status code of 5.4.0 was generated for
recipient...

They have no other problems with anyone else sending them email, just us.
Any ideas. I am at a loss...

The domain in question is lyo-t.com

Thanks


.

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