Create an OU with your a domain name you own and create a test user
exchange system manager -> Recipients -> Recipient Policies Right click to create a new policy Use the filter rule to only apply to anything in the new test domain OU set the email address to be something like firstname.lastname@example.org
e.g. Filter Rules: (&(ou>="")(name=intelligent-lcd*)) SMTP: %email@example.com Note 3: Once RUS finds a match with the LDAP query for a user, then it does not look at any of the other policies further down the list. Beware there is no policy merging, so plan your tactics accordingly. Or you may have to move the recipient policy order (priority) http://support.microsoft.com/kb/319201
Use gmail/central ops? http://centralops.net/ to test email address?
HAD to modify the ASSP -> Relaying -> Local Domains
Order google.co.uk/postini http://www.google.com/support/appsecurity/bin/answer.py?answer=115802
After verifying to Google that the account exists and the activation of billing...
Change the MX REcords... go to domain registrar (or wherever DNS record editing is)