At 23:21 08/14/2001 Tuesday, Ben Parker wrote: >On Tue, 14 Aug 2001 21:56:20 -0400, Tom Rawson <[log in to unmask]> wrote: > >>Can someone explain how "Last error: Unavailable" happens and what "DSN" >>status means? > >DSN=Delivery Status Notification (failure/success of message delivery) > RFC 1893/1894 ftp://ftp.isi.edu/in-notes/rfc1893.txt I'll leave it as an exercise to the reader to find the second mentioned URL ;-) /Pete