Knowledge Base

XFOR: How to Prevent MSMail from Delivering to SMTP Addresses

Article ID: 156570

Article Last Modified on 10/28/2006

Microsoft Windows NT 4.0
Microsoft Windows NT 3.51 Service Pack 5
Microsoft Exchange Server 4.0 Standard Edition

This article was previously published under Q156570

SYMPTOMS

When you attempt to send Internet (SMTP) mail using the Internet Mail service in a Microsoft Exchange client and you have Microsoft Mail with a LAN connection configured at the same time, your message will not stay at the Outbox until you force delivery via the Internet Mail service. Instead, you might receive a Non-Delivery Notification (NDN) from your Microsoft Mail Postoffice or the message will be delivered by Microsoft Mail via the configured gateway.

CAUSE

The problem occurs when the Microsoft Mail transport has been enabled to deliver to SMTP addresses through the mail gateway on the Microsoft Mail Server side.

WORKAROUND

To keep the Microsoft Mail transport from delivering the SMTP message and let the Internet Mail service deliver it via the Internet Service Provider, follow these steps:

Double-click the Inbox icon on the desktop to start the Microsoft Exchange client.
From the Tools menu, click Services.
Select Microsoft Mail from Services and click Properties.
Select the Delivery tab and click Address Type.
Clear SMTP checkbox under Only Send Mail to These Address Types.

Keywords: kbusage KB156570