Wayne Smith <[log in to unmask]> wrote: >Nathan C. Brindle wrote .. >>I've appended the significant portion of one of the more common errors >>I'm getting lately :). I just need some clarification. When the Batch >>SMTP transaction log says that the error is "Mailbox not found", does that >>mean that it can't find the <HOST> or the <USER> ? ... > >>550 Mailbox not found. > > The important part of the message is the number, "550". This is the > same message number for "userid not found". I took the time to send Nathan a message, off-list, elaborating on Eric's response to his post. I "walked" Nathan through a port 25 inquiry, showing how he would be able to simultaneously obtain the host _name_ equivalent for the IP number he was using, as well as verify the existence of the userid in question which, FWIW, *does* exist. Glee