NOTE: In some scenarios for user mailboxes, the AutomateProcessing parameter has been seen to have a value of AutoAccept, even though the AutoAccept value can only be applied to Resource mailboxes. In this configuration, there have been reports of automatic deletion of e-mail messages sent to the mailbox. If the output from the above cmdlet shows the AutomateProcessing parameter value is set to AutoAccept on a user mailbox, use the solution in the Resolution section of this article to reset the AutomateProcessing parameter back to the default value (AutoUpdate).
The AddNewRequestsTentatively parameter is set to $False
In this situation, if you use the following cmdlet in the Exchange Management Shell, you will see the value of the AddNewRequestsTentatively parameter.
Note In the above example cmdlets, replace <alias> with the appropriate identity value for the mailbox.
By default, in an Exchange Server 2007 or later version environment, meeting requests are automatically marked as tentative by the Exchange Calendar Assistant. However, if you disable the sniffer process in Outlook 2007 or later versions, the AutomateProcessing parameter for the user's mailbox is changed from AutoUpdate to None.
The following setting in Outlook controls the sniffer feature in Outlook.
Outlook 2010 and later versions:
Automatically process meeting requests and responses to meeting requests and polls
To get to the Automatically process meeting requests and responses to meeting requests and polls setting, use the following steps:
On the File tab, click Options.
On the Mail section, scroll down to Tracking.
Process requests and responses on arrival
To get to the Process requests and responses on arrival setting, use the following steps:
On the Tools menu, click Options.
On the Preferences tab, click E-mail Options.
Click Tracking Options.