This article was previously published under Q278235
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The Exchange 2000 server may have an unusually large number of messages in the remote queue awaiting delivery.
This condition can be caused by sending mail to a large number (for example, more than 36,000) of different domains.
The gateway name handling process does a query for each fully qualified domain name (FQDN) to see if it is the FQDN of an Exchange 2000 server. This search can take up to 100 milliseconds to complete. Because of this time delay, routing to 36,000 different domains takes on the order of one hour to complete.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 1.