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Exchange 2000 not sending messages

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by cliff680

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Over the weekend, my exchange server stopped sending messages, it still receives though. When I look at the properties of one of the queues, it says "Unable to bind to the destination server in DNS". Anyone have in ideas on what this could be???
Thanx in advance.

4 replies

by maxwell edison

If your Exchange server cannot query external DNS servers, it won't be able to locate the recipient's SMTP servers and, therefore, will not be able to deliver the e-mail.

In Exchange System Manager, if you right-click an e-mail queue (e.g., a domain name under the Queues object in the SMTP Protocol) and choose Properties, it will tell you towards the bottom of the dialog box why the e-mail message remains in the queue instead of being delivered. You might see, for example, a reason of "Unable to bind to the destination server in DNS." (As you have done)

This means that your Exchange server could not locate an MX record for the destination domain.

Therefore, check and double-check your DNS settings using tools like Netdiag, Nslookup, IPConfig and Ping.

by cliff680

Thanks for the comment, but it turned out to be that someone hacked through the Cisco PIX and started switching settings inside of exchange and the firewall ports.

by maxwell edison

Another option:

Microsoft Knowledge Base Article - 279616

"XCON: Adding a Registry Key to Re-Categorize Messages"

SUMMARY
Messages on an Exchange 2000 server may get stuck in the pre-routing queue if Microsoft Internet Information Service (IIS) has overwritten the Exchange 2000 configuration. It is very unlikely that this can happen, however, if this does occur, all the messages will not get routed. To correct this problem, refer to the "More Information" section.

The following error message may be logged in the Application event log:

Event Type: Warning
Event Source: smtpsvc
Event Category: None
Event ID: 4000
Date: 10/30/2000
Time: 2:10:10 PM
User: N/A
Computer: SERVERNAME
Description: Message delivery to the remote domain '_c78290b817c75f4bac724d36582fdeea_D' failed. The error message is 'Unable to bind to the destination server in DNS.

See link to article for resolution:

http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/q279/6/16.asp&NoWebContent=1

or (tiny)

http://tinyurl.com/njwn

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