Twice now I have had e-mails sent to known good addresses be rejected without understanding what went wrong. It just happened again when attempting to reach Rhema Radio via that website’s CONTACT page. Here is the rejection message (in part):
—– The following addresses had permanent fatal errors —–
(reason: 550 Host unknown)
—– Transcript of session follows —–
Last night I enjoyed the Rhema stream and admired the website, and was hoping to convey my reaction.