Ummmm... They should be. The should do one or the other. If they won't delegate the IP space to you so that you can create your own ptr for that IP, then they should do it for you.
If they won't do either, it's likely because they don't know how to, which means they likely don't know what they are doing, and I would run as fast as you can to another colo. I've never had a problem getting IP address that are assigned to me, delegated to me. Also, usually, most IP's simply need the PTR to resolve to SOMETHING. It doesn't need to your mail server, per se, but it should resolve to something...So, if they don't want to delegate it, they can at least create a PTR for it that resolves to something. You may also want to make sure that there is an a record for whatever they do point it to. IE, if they use "mail.domain.com" as the PTR, make sure that mail.domain.com resolves to something as well, even if the IP's don't match. Michael J. Colvin NorCal Internet Services www.norcalisp.com > -----Original Message----- > From: Maxwell Smart [mailto:[email protected]] > Sent: Tuesday, November 03, 2009 9:41 PM > To: [email protected] > Subject: Re: [qmailtoaster] Re: rdns > > That's what I thought. I had this problem once before. I am not sure I > am going to be able to get the delegation this time. At my primary > location I have my own delegation and that works fine, but they may not > be so keen at this colocation. > > Thanks for your insight. > > CJ > > Eric Shubert wrote: > > The ISP, as owner of the IP address they've given you to use, controls > > the rDNS entry. You need to get them to change it to your host name. > > > > There are rare situations where an ISP might delegate rDNS entries to > > a customer, but I wouldn't count on that. I've also heard of > > situations where the customer can use a web app to change their rDNS > > values. You'll need to contact your ISP and see how they handle it. > > You can simply tell them what you want it to be, and they should > > change it. > > > > Maxwell Smart wrote: > >> OK I know that, but that doesn't resolve my problem. Without being > >> able to setup an rDNS entry for this IP address my server mail gets > >> rejected with a non matching rDNS entry. How is this resolved? I > >> can't be the only one that has a server at a co location facility > >> where I don't control the DNS. > >> > >> Eric Shubert wrote: > >>> Maxwell Smart wrote: > >>>> I have searched, but really don't know how to ask this question. I > >>>> know > >>>> most on the list have been confronted with this. If anyone could > >>>> point > >>>> me in the direction of the answer that would be sufficient. > >>>> > >>>> I have a qmailtoaster that I just put into a co location facility. > It > >>>> has rDNS pointed to it's domain name, as it's supposed to. How do I > >>>> setup my rDNS entries for mail clients on the server at that > >>>> location? Is there a way to use a PTR record that indicates that > >>>> it's supposed to > >>>> resolve to colo.example.com? What's the correct method of > >>>> addressing this? > >>>> > >>>> CJ > >>>> > >>> > >>> There's only one rDNS entry for a given IP address. That entry > >>> should be a ptr record that points to (some other) type A record > >>> that hopefully resolves to the same address which the rDNS entry has. > >>> > >>> For example: > >>> shu...@edwin:~$ dig doris.shubes.net > >>> > >>> ; <<>> DiG 9.4.2-P2 <<>> doris.shubes.net > >>> ;; global options: printcmd > >>> ;; Got answer: > >>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4288 > >>> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 > >>> > >>> ;; QUESTION SECTION: > >>> ;doris.shubes.net. IN A > >>> > >>> ;; ANSWER SECTION: > >>> doris.shubes.net. 592 IN A 174.17.83.232 > >>> > >>> ;; Query time: 0 msec > >>> ;; SERVER: 192.168.70.253#53(192.168.70.253) > >>> ;; WHEN: Tue Nov 3 19:55:59 2009 > >>> ;; MSG SIZE rcvd: 50 > >>> > >>> shu...@edwin:~$ dig -x 174.17.83.232 > >>> > >>> ; <<>> DiG 9.4.2-P2 <<>> -x 174.17.83.232 > >>> ;; global options: printcmd > >>> ;; Got answer: > >>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 38386 > >>> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 > >>> > >>> ;; QUESTION SECTION: > >>> ;232.83.17.174.in-addr.arpa. IN PTR > >>> > >>> ;; ANSWER SECTION: > >>> 232.83.17.174.in-addr.arpa. 43031 IN PTR > >>> 174-17-83-232.phnx.qwest.net. > >>> > >>> ;; Query time: 0 msec > >>> ;; SERVER: 192.168.70.253#53(192.168.70.253) > >>> ;; WHEN: Tue Nov 3 19:56:38 2009 > >>> ;; MSG SIZE rcvd: 86 > >>> > >>> shu...@edwin:~$ dig 174-17-83-232.phnx.qwest.net > >>> > >>> ; <<>> DiG 9.4.2-P2 <<>> 174-17-83-232.phnx.qwest.net > >>> ;; global options: printcmd > >>> ;; Got answer: > >>> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59486 > >>> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 > >>> > >>> ;; QUESTION SECTION: > >>> ;174-17-83-232.phnx.qwest.net. IN A > >>> > >>> ;; ANSWER SECTION: > >>> 174-17-83-232.phnx.qwest.net. 43010 IN A 174.17.83.232 > >>> > >>> ;; Query time: 0 msec > >>> ;; SERVER: 192.168.70.253#53(192.168.70.253) > >>> ;; WHEN: Tue Nov 3 19:57:18 2009 > >>> ;; MSG SIZE rcvd: 62 > >>> > >>> shu...@edwin:~$ > >>> > >>> HTH > >>> > >> > > > > > > -- > Cecil Yother, Jr. "cj" > cj's > 2318 Clement Ave > Alameda, CA 94501 > > tel 510.865.2787 | fax 510.864.7300 > http://yother.com > > > -------------------------------------------------------------------------- > ------- > Qmailtoaster is sponsored by Vickers Consulting Group > (www.vickersconsulting.com) > Vickers Consulting Group offers Qmailtoaster support and > installations. > If you need professional help with your setup, contact them today! > -------------------------------------------------------------------------- > ------- > Please visit qmailtoaster.com for the latest news, updates, and > packages. > > To unsubscribe, e-mail: qmailtoaster-list- > [email protected] > For additional commands, e-mail: qmailtoaster-list- > [email protected] > --------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
