On 8 January 2012 16:02, Alan McKinnon <alan.mckin...@gmail.com> wrote:
> On Sat, 7 Jan 2012 09:45:44 -0600 > Carlos Sura <carlos.su...@googlemail.com> wrote: > > > Hello mates, > > > > I have a problem, my provider does not want to set rDNS to my IP's > > since I have 5 IP's rotating for my server, I don't know why. So he > > told me I can do this manually. > > > > So I've added this as a master zone: > > $ttl 38400 > > 80.236.109.in-addr.arpa. IN SOA dominio.dominio.com. > > abuse.dominio.com. (notice that last digits are miss) > > 1325905990 > > 10800 > > 3600 > > 604800 > > 38400 ) > > 80.236.109.in-addr.arpa. IN NS dominio.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR mail.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR ns1.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR mail.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR ns2.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR mail.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR mail.dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR dominio.com. > > xx.xx.xxx.xxx.in-addr.arpa. IN PTR mail.dominio.com. > > > > > > But it does not reflect any change in any machine, just in the local > > machine I get the answer, when I try in any other machine, it still > > showing me the rDNS of my provider. > > > The reason is quite simple and most sane ISPs will do it that way. > > rDNS is NOT your A records in reverse, and you have no right of access > to the zone. > > in-addr.arpa serves an entirely different purpose, it documents the > layout of the ISPs address space. Your 5 IPs have not been delegated to > you and you do not own them per whois, they still belong to your ISP and > are merely recorded in the ISP record as assigned for your use. > > Therefore the ISP will use their own documentation standards to > determine what is in the rDNS zone. > > Additionally, delegating out a /29 is a gigantic pain in the arse and > leads to an unmaintainable mess in very short order (so says the poor > sucker that's had to fix it...). At work we never sub-delegate out rDNS > to customers; but we do do it for downstream re-sellers as they are > ISPs in the in own right. > > So your ISP is quite correct in what they are saying. However, I would > like to see a clarification of what your support contact means when he > says "do it manually" - that doesn't make any sense > > -- > Alan McKinnon > > Hello Alan McKinnon, Thank you for your answer, I get you now you explained everything I needed to know. About my ISP, they changed it for me, since I was sending a lot of ticket support to them, because they have a poor support, I understand they don't manage and help me with a lot of things, basically I don't need them, the only thing I was asking for is to set the rDNS for me, hopefully they did, cause I told them, that I really don't understand what they mean by "do it by myself" and I was reading all BIND ebook to understad how delegation works. Regards -- Carlos Sura.- www.carlossura.com
