A meeting reminder is set unexpectedly when you send an email message to an Exchange Server user

Exchange Server 2010

1. Start Notepad.
2. In the new file, type the following.
   
   

   <?xml version="1.0" encoding="utf-8" ?>
   <configuration>
    <storeDriver>
     <parameters>
      <add key="AlwaysSetReminderOnAppointment" value="false" />
     </parameters>
    </storeDriver>
   </configuration>

3. Click File, and then click Save.
4. In the File name box, type StoreDriver.config.
5. In the Save as type box, click All Files.
6. Save the file in the %ExchInstallFolder%\bin folder.
7. Restart the Transport service.
8. Repeat steps 1 through 6 on all servers that are running Exchange Server 2010 and that have the Hub Transport role.

The ability to use the AlwaysSetReminderOnAppointment value is dependent on the following Set-CalendarProcessing parameters that are configured for the receiving user’s mailbox:

• AddNewRequestsTentatively (Default = True)
• ProcessExternalMeetingMessages (Default = False)

These two settings must be set to True by running the following command.

Set-CalendarProcessing < alias > -AddNewRequestsTentatively:$True -ProcessExternalMeetingMessages:$True 

In Outlook Web App (OWA), these parameters can also be configured by users to have the following effects:

• Automatically create meeting requests that are marked as Tentative on the calendar.
• Automatically process requests and responses from external senders.

Exchange Server 2007

1. Install the latest Exchange Server 2007 service pack on the Hub Transport servers. For more information about how to install the latest Exchange service pack or update rollup, visit the following TechNet website:
   
   http://technet.microsoft.com/en-us/library/ee221180(EXCHG.80).aspx
2. Start Notepad.
3. In the new file, type the following.
   
   

   <?xml version="1.0" encoding="utf-8" ?>
   <configuration>
    <storeDriver>
     <parameters>
      <add key="AlwaysSetReminderOnAppointment" value="false" />
     </parameters>
    </storeDriver>
   </configuration>

4. Click File, and then click Save.
5. In the File name box, type StoreDriver.config.
6. In the Save as type box, click All Files.
7. Save the file in the %ExchInstallFolder%\bin folder.
8. Restart the Transport service.
9. Repeat steps 1 through 7 on all servers that are running Exchange Server 2007 and that have the Hub Transport role.