When I tried to send myself an email, I get back a 5.4.0 error. Your message did not reach some or all of the intended recipients. Subject: test Sent: 6/25/2007 7:36 AM The following recipient(s) cannot be reached: mmallory@testdomain.org on 6/25/2007 7:36 AM The destination server for this recipient could not be found in Domain Name Service (DNS). Please verify the email address and retry. If that fails, contact your administrator. <mail01.differentdomain.org #5.4.0> I find out the common cause for this is the SMTP service. I look and see that that SMTP service has yet to be installed. I install it and start it up. I still get this error message. Any help is appreciated

Have you got a send connector configured on your hub transport or edge server?