<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="EN-IE" link="blue" vlink="purple" style="word-wrap:break-word"> <div class="WordSection1"> It depends on the LIR – some let you, some don’t.<o:p></o:p> And no, you don’t own the IPs – the LIR does<o:p></o:p> <o:p> </o:p> <o:p> </o:p> -- <o:p></o:p> Mr Michele Neylon<o:p></o:p> Blacknight Solutions<o:p></o:p> Hosting, Colocation & Domains<o:p></o:p> <a href="https://www.blacknight.com/">https://www.blacknight.com/</a><o:p></o:p> <a href="https://blacknight.blog/">https://blacknight.blog/</a><o:p></o:p> Intl. +353 (0) 59 9183072<o:p></o:p> Direct Dial: +353 (0)59 9183090<o:p></o:p> Personal blog: <a href="https://michele.blog/">https://michele.blog/</a><o:p></o:p> Some thoughts: <a href="https://ceo.hosting/">https://ceo.hosting/</a><o:p></o:p> -------------------------------<o:p></o:p> Blacknight Internet Solutions Ltd, Unit 12A,Barrowside Business Park,Sleaty Road,Graiguecullen,Carlow,R93 X265,Ireland Company No.: 370845<o:p></o:p> <o:p> </o:p> I have sent this email at a time that is convenient for me. I do not expect you to respond to it outside of your usual working hours.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <div id="mail-editor-reference-message-container"> <div> <div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"> From: Alessandro Vesely <vesely@tana.it> Date: Friday, 5 April 2024 at 16:24 To: Michele Neylon - Blacknight <michele@blacknight.com>, anti-abuse-wg <anti-abuse-wg@ripe.net> Subject: Re: [anti-abuse-wg] Reverse DNS delegations<o:p></o:p> </div> <div> [EXTERNAL EMAIL] Please use caution when opening attachments from unrecognised sources. On Fri 05/Apr/2024 14:41:01 +0200 Michele Neylon - Blacknight via anti-abuse-wg wrote: > Have you asked them to setup PTR records? I did so for IPv4. They're unable to delegate but can set PTRs. For IPv6, they don't have delegation for their own range, so cannot possibly resolve mine. > We usually do it for our clients, so I’ve no idea how others handle it Why can't users of a given range set up their own delegation? I know it should be hierarchical, but in case RIPE did not delegate anything (found SOA 0.a.2.ip6.arpa. dns.ripe.net) couldn't they delegate directly after proof of "ownership"? Best Ale > -- > Mr Michele Neylon > Blacknight Solutions > Hosting, Colocation & Domains > <a href="https://www.blacknight.com/">https://www.blacknight.com/</a> > <a href="https://blacknight.blog/">https://blacknight.blog/</a> > Intl. +353 (0) 59 9183072 > Direct Dial: +353 (0)59 9183090 > Personal blog: <a href="https://michele.blog/">https://michele.blog/</a> > Some thoughts: <a href="https://ceo.hosting/">https://ceo.hosting/</a> > ------------------------------- > Blacknight Internet Solutions Ltd, Unit 12A,Barrowside Business Park,Sleaty Road,Graiguecullen,Carlow,R93 X265,Ireland Company No.: 370845 > > I have sent this email at a time that is convenient for me. I do not expect you to respond to it outside of your usual working hours. > > > From: anti-abuse-wg <anti-abuse-wg-bounces@ripe.net> on behalf of Alessandro Vesely <vesely@tana.it> > Date: Friday, 5 April 2024 at 13:01 > To: anti-abuse-wg <anti-abuse-wg@ripe.net> > Subject: [anti-abuse-wg] Reverse DNS delegations > [EXTERNAL EMAIL] Please use caution when opening attachments from unrecognised sources. > > Hi all, > > what's the policy for reverse delegation? My provider assigned me a 2a02:29e1:500:6c00::/56. Great. However they didn't delegate reverse DNS. Indeed, their own 2a02:29e1::/32 has no delegations: > > ; <<>> DiG 9.18.24-1-Debian <<>> 1.e.9.2.2.0.a.2.ip6.arpa ns > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 19800 > ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 1232 > ; COOKIE: cad8ae482b0e559c01000000660fe49763aa815e05fda159 (good) > ;; QUESTION SECTION: > ;1.e.9.2.2.0.a.2.ip6.arpa. IN NS > > ;; AUTHORITY SECTION: > 0.a.2.ip6.arpa. 3600 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1712314758 3600 600 864000 3600 > > > Now there are mail servers which reject mail if they don't find a matching PTR: > > <<< 554 resimta-c2p-559421.sys.comcast.net resimta-c2p-559421.sys.comcast.net 2a02:29e1:500:6c00::4 Comcast requires that all mail servers must have a PTR record with a valid Reverse DNS entry. Currently your mail server does not fill that requirement. For more information, refer to: <a href="https://postmaster.comcast.net/smtp-error-codes.php#554"> https://postmaster.comcast.net/smtp-error-codes.php#554</a> > > > Why isn't it possible to gain a delegation by proving number assignment? > > > Best > Ale > -- > > > > > > > > > -- > > To unsubscribe from this mailing list, get a password reminder, or change your subscription options, please visit: <a href="https://mailman.ripe.net/">https://mailman.ripe.net/</a> > ><o:p></o:p> </div> </div> </div> </div> </body> </html>