I am getting this error when trying to send an email out. Win2003 w/ Exchange 2003
'<email address>' on 9/28/2004 1:17 PM
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<mail.mydomain.com #5.5.0 smtp;553 <my IP> mail rejected due to excessive spam>
What could be causing this problem? Checked blacklist's and were not on any...