Email-to-SMS gateway not working for prepaid
Switched to AT&T prepaid. Cannot receive text from email via [email scrubbed] nor via @mms.att.net. Response code 550 -Recipient could not be reached.
I can receive email from text (shows @txt.att.net address in From field) but the failure code is the same if I hit reply. Tried with both Gmail and Protonmail.