Issue Fix for outgoing limit exceeding on Windows

[John Aquilio]

I am using Plesk Obsidian 18.0.33 on Windows. The outgoing mail control is showing that the domain is exceeding the set limit of 100 per hour. I enabled logging and noticed that a large number of emails are being sent with email accounts that do not exist. For example, emails are being sent with accounts such as [email protected], [email protected] etc.
How can I fix this issue? How can I make it so that emails can be sent only from email accounts that actually exist in the domain?

Thanks.