XFOR: Performance Tuning the PCMTA

• Microsoft Exchange Server versions 4.0 and 5.0

SUMMARY

Administrators of Microsoft Exchange Server versions 4.0 and 5.0 have the ability to tune the Microsoft Mail Connector (AppleTalk) MTA (PCMTA); the component that facilitates communication between Exchange and Microsoft Mail for PC Networks.

MORE INFORMATION

Tuning takes the form of three registry settings associated with the PCMTA service created by the installer of the Microsoft Mail Connector. That name will be declared on the connector's MTA tab. In this article, the service will be called Legacy Mail Connector.

To tune the connector, perform the following steps:

1. Start Registry Editor (Regedt32.exe), and go to the following subkey:

         HKEY_LOCAL_MACHINE\System\CurrentControlSet
         \Services\Legacy Mail Connector
   

         NOTE: The above registry key is one path; it has been wrapped for
         readability.
   

2. From the Edit menu, click Add Value and add the following information:

   QueueInqueueLimit REG_SZ (value not to exceed 200) QueueLanMailbagLimit REG_SZ (value not to exceed 200) QueueLanPoLimit REG_SZ (value not to exceed 200)

   NOTE: Microsoft has not seen significant improvement when any of these values exceeds 200. Microsoft recommends a maximum setting of 200.

3. Quit Registry Editor and restart your computer.