Hi,
I find, Email>Domain>Addresses>Enable Reception no matching Addresses, Else unhandled rejected Actually works Backwards and rejects wrong addresses and only accepts legit mail when selected.
Why don't you just say.
Accept mail for Hosted Domain email addresses, or
Reject Mail with no Hosted Domain email addresses.
ALSO
With system policies set to authenticate the only way I can get SMTP server to receive mail is with Guest Access permitted. It makes sence but seems insecure is this OK, the docs and forums say nothing.
Thanks & Regards
Mike Bos