Our orginization is currently running Exchange 2007. One of my users is saying they cant get e-mails from a specific sender that is using AOL. They are recieving a "500 - Line Too Long" error.
----- The following addresses had permanent fatal errors -----
----- Transcript of session follows -----
... while talking to webmail.MyDomain.com.:
<<< 500 Line too long
554 <User@MyDomain.com>... Remote protocol error
Final-Recipient: RFC822; User@MyDomain.com
Remote-MTA: DNS; webmail.MyDomain.com
Diagnostic-Code: SMTP; 500 Line too long
Last-Attempt-Date: Mon, 6 Aug 2007 08:45:26 -0400 (EDT)
Received: from User@aol.com
We have a WatchGuard Firewall and Spam appliance sitting in front of the Exchange 2007 server.
Any idea on what is causing this???