Microsoft KB Archive/189184

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

Article ID: 189184

Article Last Modified on 10/28/2006

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APPLIES TO


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

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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

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