MKlinke wrote:
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
Yeah, I already use spamhaus and it gets a bunch of the spam. I also use
the reactive approach of adding domains to the access list and that
nails a bunch of them too.
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