Hello Guys, I have a new Exchange 2013 install and i am having problems receiving internet email. When testing from https://www.testexchangeconnectivity.com it fails at the last step when it tries to send a test email. I get the following response:

The server returned status code 451 - Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Exception details:
Message: Error in processing. The server response was: 4.7.0 Temporary server error. Please try again later. PRX3
Type: System.Net.Mail.SmtpException
Stack trace:
at System.Net.Mail.DataStopCommand.CheckResponse(SmtpStatusCode statusCode, String serverResponse)
at System.Net.Mail.DataStopCommand.Send(SmtpConnection conn)
at System.Net.Mail.SmtpClient.Send(MailMessage message)
at Microsoft.Exchange.Tools.ExRca.Tests.SmtpMessageTest.PerformTestReally()

Any Suggestions??

http://gerhardwessels.wordpress.com/2013/05/06/451-4-7-0-temporary-server-error-please-try-again-later-prx2/

Check the above mentioned settings