Restricted incoming users ruleset

[Industry Standard Computers]

> Just edit your transport file and add:
>
> joe at example.com     REJECT:Sory this user cannot receive incoming mail.
> Please re-send to generic at somewhere.com
>
> and then postmap transport and reload Postfix for it to become effective now.
>
>   
Drew,
I know I need to add a line to main.cf to hash the database, but how?

Sorry I am a cut & paste programmer. Just not my "cup of tea."

Thanks.
Butch