Search Again: Re: ListServe setup From: Richard Johnson Date: Friday, June 20, 1997 Time: 5:24:00 am At 22:55 -0400 on 6/19/97, Jim Turney wrote: > If I have a PTR record for 206.55.18.12 in my 18.55.206.in-addr.arpa. file > on QDNSPro, shouldn't a mailhost be able to find that it is mapped to > Fast.Look.net? Sure, if your QuickDNS Pro server is listed at the InterNIC as autoritative for the 18.55.206.in-addr.arpa domain, has that domain delegated to it by the server authoritative for the 55.206.in-addr.arpa domain, and/or provides data as a primary for a secondary server that's authoritative for the 18.55.206.in-addr.arpa domain. rogue:tmp {672} nslookup -type=NS 18.55.206.in-addr.arpa Server: rogue.river.com Address: 206.168.172.14 Non-authoritative answer: 18.55.206.in-addr.arpa nameserver = NS2.MNSINC.COM 18.55.206.in-addr.arpa nameserver = Name.Look.net 18.55.206.in-addr.arpa nameserver = ns.MNSINC.COM 18.55.206.in-addr.arpa nameserver = NS1.MNSINC.COM Authoritative answers can be found from: NS2.MNSINC.COM internet address = 206.55.3.11 Name.Look.net internet address = 206.55.18.14 NS1.MNSINC.COM internet address = 199.164.210.12 Looks like you're OK there if the server running QuickDNS Pro is name.look.net, and the other servers all pull zone transfers from it. > But maybe that's not the 'problem' I have a client that says > he can't send email addressed to @206.55.18.12 (see quote below) This IP is > assigned to a ListSTAR SMTP server. His mail goes through fine if he sends > to @ListServe.com (DNS records for that domain set MX to Fast.Look.net) > Could this be a DNS set up issue? > > My client says: > >I did a lookup on 206.55.18.12 and get a no match from InterNIC > >Our Mail system attempts to verify the DNS registry > >before it will forward email and it could not do it. Your client doesn't say what kind of 'lookup' he did. I suspect he's confusing whois database lookups with DNS lookups, given that bit about the InterNIC. If not, his setup has a problem, as I don't have any difficulty resolving both 206.55.18.12 <-> fast.look.net using nslookup on my openbsd systems, or DNS Lookup on my Macs. And of course he can't send mail addressed to @206.55.18.12. Try looking up an A record for an IP address sometime, and you'll likely have the same problem as he is (it's nonsense, unless your lookup software flips the lookup to help you out of your mistake :-). To send mail directly to an IP address, he needs use the following instead: @[206.55.18.12]. Richard

Messages In This Thread: Re: ListServe setup by Jim Turney on Jun 20, 1997 at 2:55:00 am Re: ListServe setup by Richard Johnson on Jun 20, 1997 at 5:24:00 am Re: ListServe setup by Jeff Graber on Jun 20, 1997 at 12:43:00 pm