block address

[Eduardo Gargiulo]

How can I configure qmail to deny some addresses use smtpd. For
example, if my domain is example.com, I want to avoid a user send a
message as [EMAIL PROTECTED] (not block yahoo.com, just [EMAIL PROTECTED]).

thanks

-- 
Eduardo Gargiulo                     <egargiulo(at)ingdesi(dot)net|com>
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