Exchange Server MAPI Editor (MFCMAPI)

A new version of MFCMAPI is now available from here it is an incredibly useful tool that provides access to the contents of MAPI stores through a graphical user interface.

There are several scenarios in which you may have to use the Mfcmapi.exe utility to view and work with messages in the SMTP TempTables in Exchange 2000 Server and in Exchange Server 2003. These scenarios include the following:

• Messages that are stuck in the TempTable block some or all SMTP traffic.
• Messages are delivered multiple times. This scenario may occur when the information store is restarted or when the computer is restarted.
• No users can browse the Internet after the SMTP service is started. This scenario may occur when a large outgoing message that is sent to several recipients becomes stuck in the SMTP queue.
• You see slow mail flow in Exchange. Messages that are awaiting directory lookup seem to be backing up. No information is logged in the Application event log about any problem with the SMTP transport.
• The administrator receives unusual non-delivery reports (NDRs). For example, the administrator receives an NDR that is similar to the following:

From: System Administrator
To: User Subject:?

Undeliverable: Your message did not reach some or all of the intended recipients. The following recipient(s) could not be reached: user@domain.com on 6/26/2001 12:00 PM The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator. <servername.domain.com # 5.0.0>  

It is a incredibly useful and poweful tool. For further examples of where you might use this tool, just search for MFCMAPI on https://support.microsoft.com