Milter-greylist

On Tue, Jul 27, 2004 at 09:00:04PM -0500, Jack L. Stone wrote:
> >If anyone is interested, I wrote a milter that does an access-list on
> >recipients. A bit like the recipient blacklist of sendmail, except that
> >it supports regex.
(snip)
> Please count me as being VERY interested. I really like the "milter"
> approach in order to catch the bad stuff as close to the front door (MTA)
> as possible.

Here it is, "as-is" after 4 hours of work, to get just what I want:

ftp://ftp.espci.fr/pub/milter-rcptfilter/milter-rcptfilter-0.5.tgz
SHA1 (milter-rcptfilter-0.5.tgz) = bd45295e07cb38099926cfebc25badbe9b1492f9

In a world where I could fork myself, I'd use that as a base to make
milter-acl, which would enable filtering with strings or regex on 
connexion IP, connexion DNS, helo string, envelope from, envelope recipient, 
header or body. It could have rule grouping, and a quick keyword to pass
through the next rules, 

I imagine an access file like this, a la ipfilter:

reject quick helo "^192\.0\.2\.1" message "Hello string should be your FQDN, not my IP"
reject /^TVqQAAMAAAA/ message "No win32 bins here" head 100
accept rcpt "precautious.user@example;com" group 100
accept rcpt "another.user@example;com" group 100
tempfail quick ip "192.0.240.1" message "I know you are an evil spammer so I'll always tempfail you just to waste your mail queues"

But I have no time to work on that. 

-- 
Emmanuel Dreyfus
manu@...