> François Rousseau wrote: > > Greylisting is not always good... > > > > The greylisting insert delay in delevery and sometimes the > email have to > > be delever fast. > > I don't trust enough DNSBLs to completely block an email only > based on them. > > What about combining BlackListing and GreyListing? > I'd like to use GreyLists (with long delay) for BlackListed emails only.
This is a very interesting idea. Ah, these italian brains! :) > Has anybody already implemented it? I use postfix, and something like that is suggested in the postfix's "SMTP Access Policy Delegation" manual (http://www.postfix.org/SMTPD_POLICY_README.html). See "Greylisting mail from frequently forged domains" in there. That, however, uses a static list of "frequently forged" domains and check_sender_access to enforce greylistin on listed domains. What you suggest is obviously more powerfull. Due to the dynamic nature of this test, I guess that at least in the postfix case it should need to be somehow embedded into the greylisting server: it seems postfix doesn't allow to specify more than one policy server in the check_policy_service directive. So, a postgrey or postgreysql server's code would shurely need to be tuned for this. > Is there already something able to implement it? FWIK, no. ----------------------------------- Giampaolo Tomassoni - IT Consultant Piazza VIII Aprile 1948, 4 I-53044 Chiusi (SI) - Italy Ph: +39-0578-21100 MAI inviare una e-mail a: NEVER send an e-mail to: [EMAIL PROTECTED] > Thanks. > > -- > ___________________________________________________ > __ > |- [EMAIL PROTECTED] > |ederico Giannici http://www.neomedia.it > ___________________________________________________
