On Monday 11 August 2003 10:41, Gordon wrote:
> I've noticed that in most of the spam that makes it through the
> sender uses a from address of something legitimate like aol.com or
> msn.com or whatever. I already block email if the domain doesn't
> exist at all. Can anyone tell me if it's possible (any prefereably
> how) to have sendmail reject the connection if the from address is
> aol.com but the mail server isn't aol.com (likewise for msn, yahoo,
> etc.).
>
> Gordon

Blacklists like www.spamhaus.org will use the sending mail server and if 
it's a known spam source, it will not get through.

FEATURE(`dnsbl',`sbl.spamhaus.org',`Rejected(http://spamhaus.org/)')dnl

or you can build your own blacklist but that's purely reactive and isn't 
suited really to my taste but may be to yours.


Regards,  Mike Klinke



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