That looks like you are using another system as your smtp server. When your mail server forwards the message to mail.msu.edu, it generates a bounce from the errors mail.msu.edu returns. If you use mail.msu.edu directly, it sounds like most clients will give up after the first error. -- Ed Symanzik MSU Mail Team [log in to unmask] Jeff Bowes wrote: > Either the issue John refers to has been corrected in the last 20 > minutes or Outlook 2000 shows some strange information. My tests with > Outlook 2003 (the mail client everybody should use) give me an error > message that shows ALL of the bad addresses I attempted to send messages > to. > > Example: > The following recipient(s) could not be reached: > > [log in to unmask] on 3/26/2004 1:17 PM > 550 unknown user [log in to unmask] > > [log in to unmask] on 3/26/2004 1:17 PM > 550 unknown user [log in to unmask]