I tried answering the exim4 question regarding the system's main mailname to be complete.org, and also answered the later question (about "hiding") the same way. Surprise, /etc/mailname was correct and the headers were correct too.
Perhaps my quibble is really in the language of the question. I have always udnerstood it to say that to achieve what I want, I have to answer fritz.complete.org there and complete.org to the rewriting question. It is now quite unclear to me what the practical difference between these two is. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]