Error Message: 550 Unable to Relay for <Domain.com>

ID: Q244029

The information in this article applies to:

Microsoft Commercial Internet System version 2.0

SYMPTOMS

When relaying to a number of other domains, Microsoft Commercial Internet System may produce the following error message:

550 Unable to relay for <domain.com.>

CAUSE

The correct order is not being used when domains are inserted into a hash table, which is used to quickly find domains. The incorrect sort order causes a loop that searches for a particular domain to terminate early.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Commercial Internet System service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:


   Date      Time       Version          Size    File name     Platform
   --------------------------------------------------------------------
   10/20/1999  12:53p                    603,528 Smtpsvc.dbg   Alpha
   10/20/1999  12:53p   1877.35          780,048 Smtpsvc.dll   Alpha

   10/20/1999  12:34p                    521,748 Smtpsvc.dbg   i386
   10/20/1999  12:35p   1877.35          527,632 Smtpsvc.dll   i386

STATUS

Microsoft has confirmed this to be a problem in Commercial Internet System 2.0.

Additional query words:

Keywords :
Version : winnt:2.0
Platform : winnt
Issue type : kbbug