We are running PB Application ( PB2019 R2 Build 2328 Running on Windows 10).
When the application is run (connect to Prod environment) it crashes at the point of mailsesssion.send. However, same PB Application connected to other environments ( DEV or UAT) work as before.
The recipients of the email are the same in all environments.
Debugged and all works fine which includes: mail logon, recipients list, attachments etc.
But at the point of MailSession.Send(MailMessage) connected to Prod database application crashes without returning a return code.