XFOR: Adding Third DNS Server Causes SMTP to Not Use MX Records (159932)


The information in this article applies to:

  • Microsoft Commercial Internet System 1.0
This article was previously published under Q159932

SYMPTOMS

When using Microsoft Mail Server, you may experience a parsing failure if the SMTP server fails to correctly parse the Domain Name System(DNS) names. However, the mail messages should still be delivered to the host indicated on the MX record.

Also, if you add a third DNS server, it can cause the SMTP server to use the "A" record when it should be using the MX record.

RESOLUTION

Upgrade to MCIS Service Pack 1 (SP1). The DNS list parsing code in the Smtpsvc.dll file which causes this problem was updated, and the SMTP server now correctly parses DNS names.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Commercial Internet System version 1.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Commercial Internet System version 1.0. For information on obtaining the Service Pack, query on the following article in the Microsoft Knowledge Base:

183062 MCIS 1.0 Service Packs 1 and 2 Information

Modification Type:MajorLast Reviewed:9/30/2003
Keywords:kbbug kbfix KB159932
©2003 Microsoft Corporation. All rights reserved.