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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: &nbsp;554 No SMTP service here.<br />
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Only the second priority host accepts mail. &nbsp;This appears to be our local Microsoft Exchange server. &nbsp;The other two hosts refuse mail with the 5xx error message. <br />
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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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We have spoken with verizon and have had them switch the priorities of the MX servers, which seemed to solve the issue. &nbsp;Thank you
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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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Hi,<br />
That is a temporary solution. What if your Primary goes down....??? Secondary will still not accept<br />
Cheers<br />
Nitin<br />
PS: You can always take your time to close the question !!!<br />

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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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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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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?

Issue with Primary exchange server refusing mail.

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.