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Issue with Primary exchange server refusing mail.

Posted on 2008-10-28
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Last Modified: 2012-06-21
It appears that our primary mail server is refusing mail -554 No SMTP Service here, how do you update DNS or close down port 25 on the primary MX server and would this resolve the issue?
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Question by:Pvteye
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gupnit earned 500 total points
ID: 22826441
Hi,
Can you please put in full NDR message and explain the issue better
Thanks
Nitin
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by:Pvteye
ID: 22830434
Our DNS records list a primary MX host that is listening on port 25 (allowing a mail server to make a connection) but refusing to accept mail with the permanent error message:  554 No SMTP service here.

Only the second priority host accepts mail.  This appears to be our local Microsoft Exchange server.  The other two hosts refuse mail with the 5xx error message.





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by:Pvteye
ID: 22840030
We have spoken with verizon and have had them switch the priorities of the MX servers, which seemed to solve the issue.  Thank you
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by:gupnit
ID: 22840130
Hi,
That is a temporary solution. What if your Primary goes down....??? Secondary will still not accept
Cheers
Nitin
PS: You can always take your time to close the question !!!
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