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Re: Idea for a new Linux-related site



> A user can contact an SMTP server from another host (otherwise ISPs would
> not have been able to provide outgoing mail for PPP hosts), and I don't
> think there is a header which says from which host the socket connection
> was made. Normally, the SMTP servers don't even filter the hosts from
> which one can connect to them.

True for the old and happy days of the Internet. But hey, we are in
1998!  I cannot believe that there are still ISPs who allow relaying!
All the SMTP servers (including sendmail) already have this feature,
and ISPs are the first to know it. Moreover, the servers of most of
the ISPs denies even messages from legal customers, in suspected cases
(e.g. spamming). The rules for these features are very easy, and even
I know how to implement them.

After all, don't forget that the main verdicts of spamming are the
ISPs, so they are the strongest pushers of anti-spamming and anti-
relaying "technology".

-- 
Eli Marmor
marmor@elmar.co.il
El-Mar Software Ltd.