Re: [exim] Spam Blocking idea

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Autor: Marc Perkel
Data:  
Para: exim-users
Assunto: Re: [exim] Spam Blocking idea
Consider this. Suppose a host send email and their helo matches the host
RDNS, and I store that. Then later a different host uses the same helo,
but they have no RDNS or that are on a dynamic IP. Wouldn't that be a
strong indicator of spam?