Search Again: Re: reverse DNS questions From: Michael Wise Date: Thursday, September 4, 2003 Time: 7:06:46 pm At 18:46 -0700 9/4/03, Hazlitt wrote: >I'm running two QDNS servers (ns1.zada.net, ns2.zada.net) on a DSL >line supplied by SBC (originally Pacific Bell). I provide hosting >and email forwarding for a handful of customers. > >rr.com recently started blocking messages that I'm forwarding to a >hosting customer of mine, who uses rr.com for his POP mailbox. I >inquired about the blocking and they replied [see below]. > >I'm not quite sure how to proceed. Is there something I can do in >QDNS or do I need to contact SBC to get them to modify their reverse >DNS? I recently went through this with two of my SBC DSL-using clients. You need to send an email to: desccentral@sbis.sbc.com And ask them to reverse delegate your IP block (they will do it). Feel free to use my email to them as a template (using your info, of course): >Date: Thu, 21 Aug 2003 11:10:36 -0700 >To: desccentral@sbis.sbc.com >From: Postmaster <postmaster@optsevents.com> >Subject: DNS Reverse Delegation Request >Cc: >Bcc: >X-Attachments: > >Greetings, > >Can you please reverse delegate our below SBC-assigned IP block: > >IP Block: 64.174.159.32/29 > >PRI - NS1.OPTSEVENTS.COM 64.174.159.37 >SEC - NS1.OKEAN.COM 64.142.30.114 > > > > >OPTS Events BTN 415 332-6339 >optsevents.com 64.174.159.32/29 >Primary server: NS1.OPTSEVENTS.COM 64.174.159.37 >Secondary server: NS1.OKEAN.COM 64.142.30.114 > > >Cordially, > >Michael Wise >postmaster@optsevents.com Once SBC has done it (probably within 24-48 hours) you will need to set up the reverse zone in your QDNS. Pay close attention to their completion email, as data in it will be the key to setting up the reverse zone correctly. What I mean by this is most people might set up the reverse zone as 159.174.64.in-addr.arpa (using, as an example, the above data). However, because my client (and probably you as well) does not have an entire /24 allocated to them, the reverse zone will not be named as if it were a /24. In my clients' case it was "32.159.174.64.in-addr.arpa" (64.174.159.32 is the first address in their block). ...so your reverse zone will be "0.83.127.66 .in-addr.arpa" --Mike (thanks to Chris for helping me out with this issue a few weeks ago)

Messages In This Thread: Reverse DNS questions by Andrew Murray on Jul 30, 1998 at 6:23:00 pm Re: Reverse DNS questions by Craig Phillips on Jul 31, 1998 at 12:39:00 am Re: Reverse DNS questions by Chris Buxton on Jul 31, 1998 at 6:58:00 am Re: Reverse DNS questions by Mia''s Virtual Post Office on Jul 31, 1998 at 12:23:00 pm Reverse DNS Questions by Mia''s Virtual Post Office on May 27, 1999 at 6:33:00 pm Re: Reverse DNS Questions by Men & Mice Support on May 28, 1999 at 12:21:00 am reverse DNS questions by Hazlitt on Sep 4, 2003 at 6:48:15 pm Re: reverse DNS questions by Michael Wise on Sep 4, 2003 at 7:06:46 pm Re: reverse DNS questions by Len Conrad on Sep 4, 2003 at 7:30:19 pm Re: reverse DNS questions by Michael Wise on Sep 4, 2003 at 7:55:00 pm Re: reverse DNS questions by Jeff Justice on Sep 4, 2003 at 8:28:36 pm Re: reverse DNS questions by Mia''s Virtual Post Office on Sep 4, 2003 at 10:07:17 pm Re: reverse DNS questions by Mia''s Virtual Post Office on Sep 4, 2003 at 10:21:21 pm Re: reverse DNS questions by Jeff Justice on Sep 4, 2003 at 10:46:58 pm Re: reverse DNS questions by Len Conrad on Sep 5, 2003 at 2:57:32 am Re: reverse DNS questions by Kenneth Kirksey on Sep 5, 2003 at 5:20:57 am Re: reverse DNS questions by Michael Wise on Sep 5, 2003 at 9:02:24 am Re: reverse DNS questions by Michael Wise on Sep 5, 2003 at 9:32:15 am Re: reverse DNS questions by Mia''s Virtual Post Office on Sep 5, 2003 at 4:33:53 pm Re: reverse DNS questions by Roland A. Dumas on Sep 6, 2003 at 11:48:53 pm Re: reverse DNS questions by Brian R. Watters on Sep 28, 2003 at 2:36:42 pm