Markus Stumpf <[EMAIL PROTECTED]> 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.
> 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.
This would block a lot of valid mail as well. I frequently send mail from
a given machine using a different (but valid) envelope sender -- and I will
sometimes use my Hotmail address if I am afraid that I might end up on
the recipient's mailing list(s).
The SMTP envelope sender doesn't truly mean "this mail comes from this email
domain". Instead it means something closer to "if this can't be delivered,
notify this address". Attempting to ensure that the envelope sender matches
the domain of the machine making the connection will break a lot of
connections; what about mail which is (legitimately) relayed through another
domain?
Charles
--
-----------------------------------------------------------------------
Charles Cazabon <[EMAIL PROTECTED]>
GPL'ed software available at: http://www.qcc.sk.ca/~charlesc/software/
Any opinions expressed are just that -- my opinions.
-----------------------------------------------------------------------
