Environment:

Exchange 5.5 SP4 on Windows NT SP6a 
Client: Outlook 2000

Can someone tell me how to prevent these messages (see below) from occurring or to 
correct them from the end users side. The errors are a result of a typical smtp email 
sent from our organization to an outside address. We typically get about one of these 
per day. I haven't been able to find anything in Technet.


Subject: Notification: Outbound Mail Failure - A protocol error
occurred.


A mail message was not sent due to a protocol error.

        500 ourserver.ourpolice.on.ca: Line too long.
The message that caused this notification was:


      To:       <[EMAIL PROTECTED]>
      From:     <[EMAIL PROTECTED]>
      Subject:  RE: subject line

Any suggestions?

Ken Millar
Network Support Analyst



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