After SMTP configuring, email notifications are sent as expected.
But, From Address is getting an additional Mail Delivery Failure error.
Delivery to the following recipient failed permanently:
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain http://www.domain.com by aspmx.l.google.com. [IP Address].
The error that the other server returned was:
550-5.1.1 The email account that you tried to reach does not exist. Please try
Question : Why is the plugin trying to send an email to firstname.lastname@example.org? How to do stop that?