can't send emails to bellsouth.net or att.net email addresses from my company domain
When sending emails to bellsouth.net or att.net email addresses from my company domain only, I get the following kickback message:
"Requested gave this error. Requested action not taken, mailbox name not allowed"
My company domain is zevcohen.com. We are not on any email block lists that I can find. I can send to bellsouth.net and att.net from my Yahoo account with no problems, it's only when sending from my zevcohen.com accounts that I get the error. Is att.net or bellsouth.net blocking my company domain for some reason? Can anyone help with this?