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Which version of Exchange 2013? RTM, CU1 or CU2?<br />
Anything else installed on the server?<br />
<br />
Simon.
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Which version of Exchange 2013? RTM, CU1 or CU2?
Anything else installed on the server?

Simon.

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Hi Simon :-)<br />
Where can I find this info?
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Honnored Experts and fellow geeks :-)<br />
<br />
I have a customer with a strange problem (always strange problems from customers)<br />
<br />
Recently they installed a new Server 2012 as a member server with Exchange 2013.<br />
<br />
At least once every day the server seems to reject mails giving senders a Non Delivery Report saying:<br />
<br />
#554 5.4.4 SMTPSEND.DNS.NonExistentDo<wbr />main; nonexistent domain ##<br />
<br />
If you simply restart the server everything is working fine for some hours.<br />
<br />
Can anyone give me some clues?
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Honnored Experts and fellow geeks :-)

I have a customer with a strange problem (always strange problems from customers)

Recently they installed a new Server 2012 as a member server with Exchange 2013.

At least once every day the server seems to reject mails giving senders a Non Delivery Report saying:

#554 5.4.4 SMTPSEND.DNS.NonExistentDomain; nonexistent domain ##

If you simply restart the server everything is working fine for some hours.

Can anyone give me some clues?

New Exchange 2013 often rejects mails

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.