Microsoft KB Archive/244029

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

Article ID: 244029

Article Last Modified on 10/6/2005



APPLIES TO

  • Microsoft Commercial Internet System 2.0



This article was previously published under Q244029

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 is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Commercial Internet System service pack that contains this hotfix.

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 about support costs, visit the following Microsoft Web site:

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

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 that this is a problem in Commercial Internet System 2.0.

Keywords: kbbug kbfix kbqfe kbhotfixserver KB244029