Task Scheduler not triggering email of huge size

Hi All,

We have developed a PowerShell script that fetches groups from FIM portal expiring in a quarter and trigger email notifications to the group owners. This script works fine when executed in PowerShell console. But when we make this script as part of Windows Task Scheduler, it does not trigger email notification. No errors logged in History tab of the task nor event viewer. We are currently trying with 10K groups which are owned by 10K different owners. The functionality is to send 1 email notification with all 10K recipients in TO list of the email notification.

When I narrow down the filter to fetch fewer groups like ~4K groups in the script and then execute the Task Scheduler it triggers the mail notification.

Any help or clue would be appreciated.

Thanks,

Veena