Maling list

Hi there,

Probably a simple question: I want a distribution list on my domain. But, to
prevent spammers to use it, I want some security (example the ip-number I
sent the mail from). So what I like to do in pseudocode:

if sender's ip = 111.111.111.111
 then forward this mail to user1, user2, user3 etc.
else
 dump it in a file called ubusers
endif

Does anyone know how to do this in procmail?

thanks


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