On Tue, 4 Jul 2006, Chris Green wrote: > They could delegate authority for your block to you, but breaking up PTR > zones smaller than a class c is a royal pain in the butt. Personally I > avoid it when I can. SBC will not set reverse DNS for you so delegation > is the only option and we've done it there. In order to do it with > gnatbox dns you have to create some pretty ugly zone names, and BIND > isn't a walk in the park either. > > To sum up again, keep doing it the way you are now unless you have a > driving reason to change it.
Driving reason is I'm getting more email rejects because of spam filters, black lists, etc. which don't like broken rdns. For what ever reason, my ISP chose to delegate individual IPs rather than the subnet or doing the RDNS. Since what they did solved my first problem, I didn't dig further. But I've now had my first important email bounce because of the sorbs black list and haven't been able to send email to aol users for quite a while. So it seems that they made 'email.xpasc.com' the zone for 65.85.17.142. I configured 65.85.17.142 as the IP and email.xpasc.com the zone name for gnatbox, but that doesn't seem to work. DNSSTUFF: http://www.dnsstuff.com/tools/ptr.ch?ip=65.85.17.142 seems to show that if I had a bind PTR record for email.xpasc.com, all would be cool. Thanks for the quick reply. Dave Morris > > Chris Green > > > David Morris wrote: > > I use my GNATBOX as the external DNS for my domain (xpasc.com). > > > > My ISP has delegated the reverse lookup for > > 65.85.17.142 > > as > > email.xpasc.com > > > > This is in fact the forward name ... and this has been sufficient for > > many years to pass spam filters so I've not dug any deeper. But > > now I'm getting more and more grief. > > > > Question 1. Has the ISP done the correct and logical thing here? > > > > If not, what is the best practices way for them to delegate my 16 IP > > subnet so GNATBOX rDNS will respond properly? > > > > If this is appropriate ... how do I fill in the GNATBOX rdns setup so that > > 65.85.17.142 resolves to a PTR record to email.xpasc.com? > > > > I'm running GB V3.6.1 ... if upgrading would fix this, then I'm willing > > to upgrade. > > > > Thanks, > > Dave Morris > > > > ------------------------------------------------------ > > To unsubscribe: [EMAIL PROTECTED] > > For additional commands: [EMAIL PROTECTED] > > Archive: http://archives.gnatbox.com/gb-users/ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/
