I have a postfix server configured to send mail to a smarthost. It is successfully authenticating with that smarthost which is another postfix server.
The receiving postfix servers has:
smtpd_relay_restrictions = permit_my_networks, permit_sasl_authenticated, reject_unauth_destination
However, when the system tries send mail through it for a destination that it doesn't host, it gives a "no valid recipients" error.
This needs to work like an open relay except only for an authenitcated sender. I'm missing something.
Thanks