Recipy syntax help

Hi guys,

I want to implement mail user restrictions in procmail.  Something like this.

User john(_at_)newingtoncs(_dot_)co(_dot_)za has e-mail, may send mail to 
addresses within the 
company, and may receive mail from addresses within the company, but he may 
not send/receive to/from addresses outside the company.

I thought this would be pretty easy, but it's not working.  This is what I 
have:

:0h
*^To: john(_at_)newingtoncs(_dot_)co(_dot_)za
{
        :0h!
        *^From:(_dot_)(_at_)newingtoncs(_dot_)co(_dot_)za
        /dev/null
}

What am I doing wrong?

Thank you
-- 
Kind regards
Hans du Plooy
Newington Consulting Services
hansdp at newingtoncs dot co dot za

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