KB189184 - XFOR: Outbound SMTP Msgs. Don't Flow w/ IMC/IMS Service Running

Article ID: 189184

Article Last Modified on 10/28/2006

Microsoft Exchange Server 4.0 Standard Edition
Microsoft Exchange Server 5.0 Standard Edition

This article was previously published under Q189184

SYMPTOMS

Outbound SMTP messages may not flow with the IMC/IMS service running, but will flow when the Msexchimc.exe command is run from a command prompt. Inbound SMTP messages work fine with the service.

CAUSE

This problem is usually caused by a corrupt or invalid service account. To verify this possibility, log on to the computer as the service account and attempt to send a message when running from the command prompt. If this does not work, check the properties of the service account.

WORKAROUND

To work around this problem, you must recreate this service account and confirm that it has the proper permissions. Please see the following Knowledge Base article(s) for further information:

147701 XADM: Exchange Service Account Permissions

MORE INFORMATION

The reason that outbound messages flow when the IMC/IMS is started from the command prompt is that the Virtual MS-DOS Machine (VDM) is using the account permissions of the user logged on (most frequently the Administrator) rather than the Service Account permissions that the service uses.

Additional query words: IMC

Keywords: kbprb KB189184