Auto responding mail

Hi.

  If anyone could help me.

  I want that anytime a mail arrives to an address (user reads mail via 
POP3 server), a response (in a file or somewhere it should be) is sended
to the address where the original mail comes.

  How can I do that?

 Thanks for all.

P.S. Please, reply at my own address, not to the list (I think that I 
still couldn't have the suscription)  :-(


Daniel Serena

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