On Jul 04 2000, Markus Stumpf wrote:
> But this is exactly the point.
> Valid (e.g.!!!) hotmail.com eMails should come from an outgoing
> hotmail.com smtp server. If they don't they're most probably faked
> sender addresses used by spammers.
No, they should not.
For instance, all my e-mails use iname.com as the envelope and
as the From: field, but I don't send mail from them (in fact,
they are in another country); I use my ISP's relays.
The same applies to everybody that uses a forwarder address
for their e-mails and so you (and your customers) won't be
able to receive such e-mails if you block in that way.
In fact, I never use my real e-mail address because it's
constantly changing.
> There is not any switch of tcpserver that helps detect this and
> there is no rule that you can specify in a cdb file that prevents
> this spam, yet.
I guess that this is one of the harder wars against spammers,
for one can never know if the sending side is really a
legitimate user or if it is a disguised spammer.
[]s, Roger...
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Rogerio Brito - [EMAIL PROTECTED] - http://www.ime.usp.br/~rbrito/
Nectar homepage: http://www.linux.ime.usp.br/~rbrito/nectar/
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