NX_MAIL_MAX_THREADS maximum value

Products

• CA Service Desk Manager
• CA Service Management - Service Desk Manager

Issue/Introduction

We are facing an issue with mail notifications sent out with delays. We have many notifications sent out in one hour.
We increased the option NX_MAIL_MAX_THREADS to the value 40 but it looks like this is not enough.
Can we increase this number higher than 40? Is there any limitation for this value?

Environment

Component:  SDM Mail Notifications

CA Service Desk Manager 12.9 and higher

Resolution

The option mail_max_threads is defined as "Specifies the maximum number of concurrent SMTP connections that can attempt to communicate with the server". 40 is the max value which is supported.

Additional Information

The mail server should also be examined to the max number of threads it will support.  Example: Exchange servers usually default their maximum thread to 20. 

Setting the SDM mail_max_threads to a higher value than what the given mail server will support may result in mail connection losses