We actually manually list our customer ranges in pbl, or at least used to. Probably something else that I need to check on.
On Fri, Apr 21, 2023, 8:04 AM Lukas Tribus <lu...@ltri.eu> wrote: > Hello, > > > without PTRs you will probably get your prefixes listed in things like > Spamhouse PBL. So adding the correct PTR for a mailserver may not be > enough, as services like that love to classify entire IP blocks. Of > course Spamhaus provides the tools to fix this issue. But what if > there are 4 - 5 other services like that? Do you want to go down that > rabbit hole, everytime you turn up a mailserver in your prefix? > > I also think reverse DNS records are useful when you have discussions > with content providers for all sorts of reasons like geolocation > issues or "VPN" classifications. > > Of course whois/irr records are the proper tools for this. But if I > have to discuss my IP ranges with some first level support desk at a > large content provider, everything that stands out negatively will > impact my chances of actually getting it done and how fast it will get > done. > > > Considering how subjective IP classifications are, I will not return > NXDOMAIN for v4 addresses if there is even a small chance that it will > make my life harder at some point in the future. > > > Lukas >
