Exchange 2007 SP1 I have setup my domain and theexchange environment. I can send emails internally and I can send emails to the internet. Before I move Public DNS to point to the new setup how can I test that my server will accept incoming emails from the internet and that it will process them correctly? Thanks!

use SMTP at the command line to send inbound mail http://exchangedeepthoughts.blogspot.com/2007/12/testing-mail-server-via-telnet.html