Consider the following scenario:
You clear the Allow automatic replies check box for a remote domain on a Microsoft Exchange Server 2010 server.
A user configures a rule to use the have server reply using a specific message option in Microsoft Office Outlook.
An email message that matches the rule is sent from the remote domain to the user.
In this scenario, the automatic reply message is delivered unexpectedly to the remote domain.
This issue occurs because Exchange Server 2010 uses an incorrect message class for automatic replies which is not recognized by the categorizer.
To resolve this issue, install the following update rollup:
2645995 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how to configure remote domain properties, visit the following Microsoft website: