MonitorWare Knowledge Base

Error message "Message delivery to the remote domain 'yourdomain.com' failed for the following reason. The connection was dropped by the remote host".

This looks like to remove server did not "like" to talk to you. This can happen by anti-spam measuers. A probably cause is that you are on a dynamic (dial-up) ip which is blacklisted (or note being accepted at all because of its dial-in nature).

HTH
Rainer