Exchange 2003 SMTP Performance

If you have a high volume of messaging traffic utilizing your Exchange 2003 bridgehead servers you may want to adjust these setting to increase queuing efficientcy.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SMTPSVC\Queuing]"MsgHandleThreshold"=dword:00001388 (which is 5000 decimal)

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SMTPSVC\Queuing] "MsgHandleAsyncThreshold"=dword:00001388 (which is 5000 decimal)

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\InetInfo\Parameters] "FileCacheLifeTimeSeconds"=dword:0000012c (300 decimal, which is 5 minutes)

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\InetInfo\Parameters] "FileCacheMaxHandles"=dword:00000258 (which is 600 decimal)