Dear List-Members, I am new to that list since I got a problem which I do not seem to get solved. Searching the list archive did not present a solution eventhough I think that my problem is already known. I am running qmail-1.03. So far everything worked fine. Today I figured out that an Exchange-Server is not able to recognize my qmail aliases. Exchange returns the unsent email with something like: "did not reach the following recipient(s)" or "receipient not unkown" (I translated those messages from German to English so they might differ a little) Everything works fine when sending from another server using sendmail or qmail. Please help, regards, Axel