The reminder is triggered earlier than expected when an Exchange Server 2007 server receives an iCalendar meeting request message over an SMTP server

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Article ID: 950409 - View products that this article applies to.
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SYMPTOMS

Consider the following scenario:
  • A Microsoft Exchange Server 2007 server receives an iCalendar meeting request message over an SMTP server.
  • The meeting request is delivered over a receive connector. The Externally Secured authentication method is selected on the receive connector.
  • The From address on the meeting request matches and resolves to a user or to a contact object that exists in the Active Directory directory service.
In this scenario, the reminder is triggered earlier than expected.

CAUSE

This problem occurs because the iCalendar body part in the message that is received from an SMTP server does not specify a VALARM property. Therefore, Exchange Server 2007 does not cause the reminder to remain in the calendar appointment when the request is processed by the calendar assistant. This condition causes the default reminder to occur within 15 minutes of receipt.

RESOLUTION

To resolve this problem, install Update Rollup 4 for Exchange Server 2007 Service Pack 1 (SP1). For more information about Update Rollup 4 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 4 for Exchange Server 2007 Service Pack 1
For more information about how to install the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007

WORKAROUND

To work around this problem, disable automatic processing of meeting requests for the mailbox. To do this, run the following Set-MailboxCalendarSettings cmdlet:
Set-MailboxCalendarSettings -Identity "MailboxIdParameter" -AutomateProcessing None
Note To run the Set-MailboxCalendarSettings cmdlet, the Exchange Organization Administrator role must be delegated for the account that you use.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For more information about the Set-MailboxCalendarSettings cmdlet, visit the following Web site:
http://technet.microsoft.com/en-us/library/aa996340.aspx
For more information about the iCalendar architecture, visit the following Web site:
http://msdn.microsoft.com/en-us/library/aa579407(EXCHG.80).aspx
For more information about the reminderoffset field, visit the following Web site:
http://msdn.microsoft.com/en-us/library/aa581525(EXCHG.80).aspx

Properties

Article ID: 950409 - Last Review: October 7, 2008 - Revision: 3.1
APPLIES TO
  • Microsoft Exchange Server 2007 Enterprise Edition
  • Microsoft Exchange Server 2007 Standard Edition
  • Microsoft Exchange Server 2007 Service Pack 1
Keywords: 
kbbug kbfix kbqfe kbexpertiseadvanced KB950409

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