On Oct 2, 2014, at 12:56 PM, Reindl Harald <h.rei...@thelounge.net> wrote:
> > Am 02.10.2014 um 20:50 schrieb Philip Prindeville: >> The issue we’ve been having with Blacklotus (self-appointed champions of >> everyone’s right to be on the internet, no matter how shady, is the >> impression I got from speaking to their sales department a while ago) has >> one commonality. >> >> All of the domains that resolve to 192.3.186.4 are registered to >> registrar-servers.com. >> >> How do I go about blocking based on the NS records for a given domain having >> NS records with an RHS of dns\d+\.registrar-servers\.com? > > why do you want to solve that on the expensive content-filter? > http://www.postfix.org/postconf.5.html#smtpd_sender_restrictions > > check_sender_ns_access type:table > Search the specified access(5) database for the DNS servers for the MAIL FROM > domain, and execute the corresponding > action. Note: a result of "OK" is not allowed for safety reasons. Instead, > use DUNNO in order to exclude specific > hosts from blacklists. This feature is available in Postfix 2.1 and later. > Well, I’m using sendmail for a start…
