Hi Everyone. I am trying to gifure out why I am getting a 451 error when clients are trying to send email: Client error: Task 'mail.csdsinc.com - Sending' reported error (0x800CCC6A) : 'Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP). The server responded: 451 mail server temporarily rejected message (#4.3.0)' Here is a tail of my smtp log. @4000000047586d0f1cf5eae4 simscan: connect error 2 @4000000047586d0f1d36b4d4 connect(): Connection refused @4000000047586d0f1d3e6594 qmail-smtpd: qq soft reject (mail server temporarily rejected message (#4.3.0)): MAILFROM:<removed to protect the innocent@@edgemore.com> RCPTTO:removed top protect the innocent at csdsinc.com Clam & Spam logs are normal. Any ideas? Thanks, Ed -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20071206/b25fd687/attachment-0004.html>