[some of this appears to be covered in later responses, but lets go over
the whole lot....]
} 2. We do not allow numeric characters at the beginning of an email
} address. Any Hotmail Login Name beginning with a NUMERIC character is
} a forgery.
This can be caught in the sender reject rules - ie something like this in
the config file:-
sender_reject = "@@partial0-cdb;/etc/exim/spam_block_regex.cdb"
and then in the spam_block_regex file:-
hotmail.com ^\d:(other rules)
That kills numeric start addresses in the SMTP conversation - doesn't tie
up your CPU much at all.
} 3. We include the field "X-Originating-IP: [xxx.xxx.xxx.xxx]" in the
} header of each email message that is delivered via our system. If an
} email message doesn't contain this field in its full headers, it DID
} NOT come from Hotmail.
I am sure people send mail "from" their hotmail accounts using their own
ISPs. I don't feel that that is abuse of the system. Writing a filter to
detect this would be quite easy and you could then see how much it would
catch using a log phrase. However adding that to an outgoing mail is
probably more trivial for a spammer than for a legitimate but novice user,
so what have you gained??
Nigel.
--
[ Nigel.Metheringham@??? - Systems Software Engineer ]
[ Tel : +44 113 207 6112 Fax : +44 113 234 6065 ]
[ Real life is but a pale imitation of a Dilbert strip ]
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