Re: 'dialup-ranges?' Re: greylisting DNSBL hosts?
On Friday 08 October 2004 18:09, Kilian Krause wrote:
> Nobody said this is the magic weapon everybody uses and nobody found
> yet, it was just me wondering if these two pieces can't be matched
> together for the final goal. (As I said above, I'm against massive DNSBL
> use on the hardcore scale, so why not try with greylisting?)
> So do you still reckon that DNSBL are too far out for using them as a
> greylisting success probability predictor?
It strikes me as an idea well worth trying. I believe you mentioned exim, I
haven't used exim in a long time so I can't help you there.
As an aside this would be very easy to implement in postfix (from
testing/unstable only) using SMTP access policy delegation. A very simple
script can be plugged into postfix at the RCPT stage, perform the DUL check
and greylist as appropriate. I am working on an access policy delegation
script right now and may just add checks similar to your suggestion.
Fraser Campbell <email@example.com> http://www.wehave.net/
Georgetown, Ontario, Canada Debian GNU/Linux