I have a distribution group configured to forward email to an outside company. When I send specific emails to this distribution group, I get this kick-back below
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<mail.server.com #5.7.1 smtp;554 5.7.1 Message cannot be accepted, content filter rejection block3>
If I send a simple email, with a subject of test, it goes through every time.
Any help is appreciated.