Milter-greylist

On Mon, 5 Nov 2018, manu@... [milter-greylist] wrote:

> Fred Smith fredex@... [milter-greylist]
> <milter-greylist@yahoogroups.com> wrote:
>
>> grep qq.com `locate greylist.db` | sort -k4
>
> I note qq.com publishes SPF records, and none of the source IP addresses
> in your case match it. You can probably filter the spam and still accept
> legitimate mail from qq.com by using SPF:
>
> racl blacklist spf fail

I see that my own spf rules (based on ideas from Jim Klimov) are 
perhaps excessively permissive:

   racl greylist spf softfail delay 120m

   racl greylist spf self delay 120m

It seems that

   racl greylist spf self fail

should be reasonably safe to use, and help block spammers who use 
properly-functioning DNS and mail delivery systems.

Bob
-- 
Bob Friesenhahn
bfriesen@..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/