| The senders address works, the recipients address does not.
|
| deny message = relaying administratively denied from ${sender_address}
| to ${recipient_address}
I expect you want:
deny message = relaying administratively denied from ${sender_address}
to ${local_part}@$domain
However, assuming you're accepting/denying relay access on the basis of
sender IP, then perhaps the following would be more appropriate:
deny message = relaying administratively denied from ${sender_host_address}
to ${local_part}@$domain
