hi,

> So how can I prevent some users from sending and receveing any > mail to/from any 
>host other then localhost?

the sending part could be done by selective reaying with tcp rules /tcp.smtp).
sorry, but not any good idea for the receiving part (maybe some dot-qmail fiddeling? 
dropping each mail where the sender-domain is
not your local email-domain) btw: to me it seems not quite polite anyway

;) a
==============================================
Alexander Jernejcic
email:[EMAIL PROTECTED]

begin LOVE-LETTER-UND-NIX-DAZUGELERNT.txt.vbs
I am a Signature, not a Virus!
end

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