Re: [exim] Spam from domain yahoo.com

On Mon, 13 Sep 2004 11:01:10 -0300, Silmar A. Marca
<marca@???> wrote:
> I use callout verify, spf verify and all other methods, but the domain yahoo.com
> is 95% of received SPAM.

I presume you mean that 95% of your spam has a forged sender address
of yahoo.com?

> Have a Mysql or other method to block email from yahoo.com only in "mx of
> yahoo.com"???

That's something you don't want to do - how do you know that genuine
yahoo.com email will arrive from a host which is MX for yahoo.com ?
(Hint: it doesn't).

> How to contact the administrator of yahoo.com to set a TXT of spf
> to yahoo.com???

postmaster@??? ?

Do you do other RCPT-time checks such as blocking bogus HELOs, DNSBL
etc? These can eliminate large quantities of unwanted mail. After
that, content scanning with SpamAssassin will probably get the numbers
down to a manageable level.

Peter