My SMTP server was set to use Mail.msu.edu. It seems that Outlook 2003 is changing the errors from the MSU SMTP server into a "bounce e-mail." I tested this in the following ways: 1) added the account "Mail.msu.edu" to my existing Outlook profile and sent the message through the Mail.msu.edu using the "Accounts" drop-down box in Outlook 2003. I received a "bounce e-mail." This method should send messages through Mail.msu.edu instead of through my Exchange server, but after your e-mail I wasn't convinced so I went to step 2. 2) Create a new Outlook 2003 profile under my existing Windows user account. This profile knows nothing of my Exchange settings. I get the same format of bounce message. 3) Log in to my PC as a test user, create the Outlook profile to use Mail.msu.edu. Same format of bounce message. 4) Create a new test user that does not have an Exchange account. Log in, create Outlook profile, send test message. Sesame format of bounce. 5) Configure Netscape 7.1. Send test message. Here I got some lame pop-box that only showed the first bad address. It seems clear from these tests that it's Outlook 2003 that's generating the "bounce e-mail" from the Mail.msu.edu errors, not another SMTP server. This is cool because the mail client can show the whole error message received from the server instead of having to chop it up to be shown in a pop-box. -Jeff -----Original Message----- From: Ed Symanzik [mailto:[log in to unmask]] Sent: Friday, March 26, 2004 1:30 PM To: Jeff Bowes Cc: [log in to unmask] Subject: Re: [MSUNAG] Question for email gurus 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]