Thank you for the explanation. Even with the "rcpt-to" parameter, I still get a "550 Invalid recipient" error, and no sign of activity from my the lmtp daemon the other side of the socket.
How can I debug what causes this 550 error?
Thank you for the explanation. Even with the "rcpt-to" parameter, I still get a "550 Invalid recipient" error, and no sign of activity from my the lmtp daemon the other side of the socket.
How can I debug what causes this 550 error?