Microsoft KB Archive/326992

= Outgoing SMTP Mail Messages Are Not Sent =

Article ID: 326992

Article Last Modified on 10/25/2007

-

APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition
 * Microsoft Exchange Server 2003 Standard Edition

-



This article was previously published under Q326992



SYMPTOMS
Outgoing Simple Mail Transfer Protocol (SMTP) mail messages are not sent and become backed up in SMTP queues. Incoming mail services are not affected.



CAUSE
This behavior may occur if both of the following conditions are true:


 * You use an Internet service provider (ISP) to connect your network to the Internet.

-and-
 * Your SMTP virtual server does not use the Internet Protocol (IP) address of your ISP's Domain Name System (DNS) server.



RESOLUTION
To resolve this issue, configure your SMTP virtual server to use the IP address of your ISP's DNS server. To do this, follow these steps:


 * 1) Start Exchange System Manager.
 * 2) Expand   (where   is the name of your Exchange organization).
 * 3) Expand Servers, and then expand   (where   is the name of your server).
 * 4) Expand Protocols, and then expand SMTP.
 * 5) Right-click   (where   is the name of your SMTP virtual server), and then click Properties.
 * 6) Click the Delivery tab, and then click Advanced.
 * 7) Click Configure next to Configure external DNS Servers.
 * 8) Click Add, type the IP address of your ISP's DNS server, and then click OK.



MORE INFORMATION
For more information about Exchange technical resources, visit the following Microsoft Web site:

Exchange Server Technical Resources

http://www.microsoft.com/exchange/techinfo/default.asp

Additional query words: XFOR

Keywords: kbprb KB326992

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.