/home/zik> telnet mail.msu.edu smtp Trying 35.9.75.123... Connected to mail.msu.edu. Escape character is '^]'. 220 sys23.mail.msu.edu ESMTP Exim 4.24 Wed, 24 Mar 2004 14:12:34 -0500 ehlo foo 250-sys23.mail.msu.edu Hello hardy.cl.msu.edu [35.8.3.246] 250-SIZE 52428800 250-PIPELINING 250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP mail from: [log in to unmask] 250 OK rcpt to: [log in to unmask] 550 unknown user rcpt to: [log in to unmask] 550 unknown user rcpt to: [log in to unmask],[log in to unmask] 501 [log in to unmask],[log in to unmask]: malformed address: ,[log in to unmask] may not follow [log in to unmask] rcpt to: [log in to unmask] 250 Accepted data 354 Enter message, ending with "." on a line by itself Subject: foo test . 250 OK id=1B6DrC-0004kF-96 quit 221 sys23.mail.msu.edu closing connection Connection closed by foreign host. This test came through ok, even though there were previous lines with unknown users. I did a similar test with Mozilla and it refuses to send the message. Looks to me like a client feature. Not terribly friendly though that it won't tell you which address failed. Note, this is one method of finding which address is bad. I believe the difference in behavior here is that Pilot would accept mail for accounts that had not yet been activated. -- Ed Symanzik MSU Mail Team [log in to unmask]