ME020580 - HOWTO: Increasing resources available to IMAP service


SUMMARY

The IMAP service in MailEnable is designed to handle many concurrent connections. You might find though that IMAP responsiveness is decreasing when you have many hundreds of connections. This may happen if a lot of the connections are actually performing a command at the exact same time, such as listing messages. In this case, you may get better performance increasing the amount of resources that IMAP has available. 

DETAIL

The MailEnable IMAP service uses worker threads to handle connections. By default the number of threads allocated for this is 32. This can be increased. The IMAP service needs to be restarted to read the new setting. Note that this number is not the number of available connections, and will use more memory on your server. Increase the amount by a small number (keep the number below 64). The Windows registry key to add is detailed below.

For 64bit Windows servers:

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mail Enable\Mail Enable\Services]
"Worker Thread Pool Size"=dword:00000020

For 32bit Windows servers:

[HKEY_LOCAL_MACHINE\SOFTWARE\Mail Enable\Mail Enable\Services]
"Worker Thread Pool Size"=dword:00000020

 



Product:MailEnable
Category:Other
Module:General
Keywords:
Class:HOWTO: Product Instructions
Revised:Wednesday, May 4, 2016
Author:
Publisher:MailEnable