replacing majordomo, is it possible?

Hi:

I have been trying to setup a "secret" list with majordomo but majordomo or 
sendmail keeps printing the secret alias in the header of the email. Would it 
be possible to do some sort of authentication with procmail and hiding the real 
alias from the header?

Sorry if this is repeated thread, but I am newbie to procmail, I have only used 
it for basic filtering.

Thanks,

Raul
############################
   Raúl Gutiérrez Segalés

    rau(_at_)campoalto(_dot_)edu(_dot_)py
      rau(_at_)rieder(_dot_)net
############################

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