My Reverse Look Up suddenly stopped working for most servers
Majid Chavoshi
samad.agha2007 at gmail.com
Wed Feb 8 19:30:45 UTC 2017
I copied and pasted the solution from Outlook email, but I don't see it, so
I guess I'll type it.
Again, DONE, and I share the solution below from our DNS Admin for the
knowledge library; thanks again.
PTR records for the specified server below were missing.
On Wed, Feb 8, 2017 at 10:51 AM, Reindl Harald <h.reindl at thelounge.net>
wrote:
> frankly - one last time, otherwise don't expect any future answers - if
> you get a response on the mailing list then sned your answer to the mailing
> list and *not* to the individual which responded
>
> Am 08.02.2017 um 17:46 schrieb Majid Chavoshi:
>
>> I understand, I am the Unix/Linux SysAdmin down stream, I'm just trying
>> to be helpful to our DNS Admin up stream. I don't even have access to
>> our DNS servers; thanks so much for your help.
>>
>
> you don't need access to the dns servers for using dig/whois/nslookup
>
> jesus just mention the IP's in question, what PTR answer you expect and
> the full input and output when doing that lookup
>
> you said "but the reverse look up suddenly stopped working for most
> servers" in your initial post - so you must have entered some command
> leading to that conclusion - so why don't you copy&paste the input and
> output of that command in your opening post?
>
> On Wed, Feb 8, 2017 at 10:42 AM, Reindl Harald <h.reindl at thelounge.net
>> <mailto:h.reindl at thelounge.net>> wrote:
>>
>> don't reply off-list on mailing-lists!
>>
>> Am 08.02.2017 um 17:37 schrieb Majid Chavoshi:
>>
>> Hey reindl,
>>
>> Thanks so much for your reply. How would I find out if I own it
>> or not?
>> Sorry, but I'm kind of new at this; thanks.
>>
>>
>> if you would have told the nameserver and sample ip's everybody
>> already could take a look, but you didn't provide *any* informations
>> in two mails but aksing for help - help us to help you
>>
>> you should know such basics about your enviroment!
>>
>> how many ip-adresses do you have?
>> ISP's typically don#t delegate (if at all) if you don't have at
>> least a /24 for your own
>>
>> On Wed, Feb 8, 2017 at 10:32 AM, Reindl Harald
>> <h.reindl at thelounge.net <mailto:h.reindl at thelounge.net>
>> <mailto:h.reindl at thelounge.net <mailto:h.reindl at thelounge.net>>>
>> wrote:
>>
>>
>>
>> Am 08.02.2017 um 17:26 schrieb Majid Chavoshi:
>>
>> My DNS was working find, but the reverse look up
>> suddenly stopped
>> working for most servers (it still works for a few
>> servers, I'd
>> say it
>> still works for 20% of servers). Where can I look? What to
>> restart? What
>> should I do? Thanks
>>
>>
>> you don't provide much informations
>>
>> are you sure *your* server is responsible for the PTR zone
>> at all?
>> for most people it is not because it belongs to the ISP
>>
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