Re: calculation of mail traffic
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El Jueves, 20 de Marzo de 2003 02:50, debian@computerdatasafe.com.au escribió:
> tomas@asertel.es said:
> > Well.. I can also grep "From:" to see wich addresses are sending more
> > mails than usual, don't I?
>
> You're joking, right? From: is easily faked, and any bulk spammer fakes it.
Yes, "From:" is easily faked, but if I see an IP that uses many differents
"From:"s I can block it, and if I see a "From:" that should not be allowed, I
can block it, too...
>
> Unless you block your clients from sending on port 25, you can't tell what
> mail they're sending.
I think I've not said outgoing mail server and incoming mail server are two
different computers...
> If you do block port 25, I wouldn't expect your commercial clients to be
> happy.
I would never block port 25... why?
>
> If you force (by firewall rules or otherwise) them to use mail.bigisp.com
> as their outgoing relay, they might feel you're invading their privacy.
> Would you want someone checking your phone calls (for other than billing
> purposes)?
I'm sorry but I think we're not talking about the same...
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