Re: [Exim] Sender address does not resolve?

OK, that SMTP transaction was a red herring. It is a DNS issue.

For some reason, the receiving server can't look up your domain:

mail from:<ag77-bounces@???>
451 4.1.8 Domain of sender address ag77-bounces@??? does not resolve

No idea why it would do this, as zionyam.net resolves fine for me. Maybe
ask postmaster @ that domain?

--
Juha