Restricted incoming users ruleset

[Industry Standard Computers]

The transport didn't work and that syntax was what I had used. My 
problem is right out of the Postfix ReadMe's:  (except I changed the 
name of the database to make more sense.)

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#  Stop incoming mail to all users in the "restricted_incoming_user.db"

smtpd_restriction_classes = restrictive, permissive
restrictive = reject_unknown_sender_domain, reject_unknown_client_hostname
permissive = permit

smtpd_recipient_restrictions =  check_recipient_access 
hash:/etc/postfix/restricted_incoming_users ...

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Postfix needs to do more documentation written in understandable English 
for the non-postfix expert.  This is the main reason I came to MS in the 
first place to help secure my email server and the install was a 
nightmare on a "firewall" linux.

Thanks for you help.
butch