>> Is there a possibility to use a DNS-based RBL whitelist in Postfix? In >> The Netherlands we have an NL-Whitelist, which contains the IP's of all >> major ISP's. By using this whitelist one can make sure that accidental >> automatic blacklisting won't disrupt regular email traffic. >> >> I had something like a permit_rbl_client directive in mind, that could >> be placed in smtpd_recipient_restrictions, right before the >> reject_rbl_client lines. Apparently there is no permit_rbl_client at >> this moment, is there any other way to achieve this? >> >> Kind regards, >> >> Erik. > > Postfix has no built-in support for DNS whitelists. > You can add support by using a policy service. > http://www.postfix.org/SMTPD_POLICY_README.html > > -- Noel Jones
Thanks for your reply. I see that I could construct a policy service to do this, but it seems simpler and much more efficient to let postfix do this natively. It already has al the DNS-resolving code and whatnot, I would guess it shouldn't take much more than an extra negation somewhere to make it permit instead of deny. Wietse, is there a reason why you would not want a permit_rbl_client feature in postfix? If not, then I would like to hereby suggest this feature request. If you would approve the feature request but don't have the time and/or other incentive to implement it, I'd gladly try to submit a patch.
