My company is having difficulty sending mail to one particular domain. Upon the users sending the mail, they get a message back stating the following:
You do not have permission to send to this recipient. For assistance, contact your system administrator 5.7.1 smtp;550 5.7.1 email@example.com>...Rejected - TRUSTmanager
The Rejected - TRUSTmanager explaination i have not come across before. The message is also being generated by by mail gateway server.
Can someone please shed some light on this?