In article ,
"Novosielski, Ryan" wrote:
> Came across another instance where [reverse lookups] may matter: TCP Wrappers.
> Although the case there was a bit more peculiar -- rr.net does not
> appear to have FORWARD DNS for at least some of its dynamic address
> space. So you can get a PTR, and t
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On 07/12/2013 11:23 AM, Sam Wilson wrote:
> In article
> , Steven
> Carr wrote:
>
>> On 2 July 2013 14:42, Sam Wilson wrote:
>>> Can anyone here give examples of the types of various software
>>> that will not operate without a PTR record?
>>
>> Th
In article ,
Daniel McDonald wrote:
> On 7/2/13 8:42 AM, "Sam Wilson" wrote:
>
> > There may be a subtle language thing going on here. I read the original
> > post above as saying, literally, "you need PTR records because various
> > software tries to match A and PTR records". It doesn't say
In article ,
Steven Carr wrote:
> On 2 July 2013 14:42, Sam Wilson wrote:
> > Can anyone here give examples of the types of various software that will
> > not operate without a PTR record?
>
> There have already been numerous listings of software that require
> reverse lookups. SMTP being the
On Jun 28, 2013, at 3:54 PM, Ward, Mike S wrote:
I want to thank everyone for their input. It sounds like they do
need the reverse address entries in specific circumstances so I’m
going to recommend that they add them.
Lack of reverse records made a big difference in the distant past.
Now, I
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On 07/03/2013 11:33 PM, Doug Barton wrote:
> On 07/03/2013 07:52 PM, Novosielski, Ryan wrote: | On 07/03/2013
> 04:39 AM, Matus UHLAR - fantomas wrote: |> On 02.07.13 08:53,
> Daniel McDonald wrote: |>> I've had trouble with OSI-Soft PI
> historian wit
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On 07/03/2013 07:52 PM, Novosielski, Ryan wrote:
| On 07/03/2013 04:39 AM, Matus UHLAR - fantomas wrote:
|> On 02.07.13 08:53, Daniel McDonald wrote:
|>> I've had trouble with OSI-Soft PI historian without reverse
|>> entries. If there is no revers
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On 07/03/2013 04:39 AM, Matus UHLAR - fantomas wrote:
> On 02.07.13 08:53, Daniel McDonald wrote:
>> I've had trouble with OSI-Soft PI historian without reverse
>> entries. If there is no reverse, then the PI software would
>> spend about 30 seconds l
On 02.07.13 08:53, Daniel McDonald wrote:
I've had trouble with OSI-Soft PI historian without reverse entries. If
there is no reverse, then the PI software would spend about 30 seconds
looking in vain for a DNS answer before sending a SYN-ACK packet.
If there is no reverse, the software shoul
On 7/2/13 12:46 PM, John Horne wrote:
On Tue, 2013-07-02 at 12:02 -0700, Eduardo Bonsi wrote:
On 7/2/13 9:35 AM, John Horne wrote:
We were alerted to the problem because we got long delays (around 20
seconds) when accessing a site doing a reverse lookup. That service
then, no doubt the same as
On 02/07/13 21:02, Eduardo Bonsi wrote:
> I have been reading all your concerns about reverse FQDNS. In my
> example, we are a very small firm and I am the IT network admin
> responsible for configuring our server. One of the reasons I
> configured our server was because we deal with Photography,
On Tue, 2013-07-02 at 12:02 -0700, Eduardo Bonsi wrote:
> On 7/2/13 9:35 AM, John Horne wrote:
> >
> > We were alerted to the problem because we got long delays (around 20
> > seconds) when accessing a site doing a reverse lookup. That service
> > then, no doubt the same as with SMTP, then proceede
On 7/2/13 9:35 AM, John Horne wrote:
On Tue, 2013-07-02 at 14:42 +0100, Sam Wilson wrote:
Can anyone here give examples of the types of various software that will
not operate without a PTR record?
Nope, and our entire reverse zone was externally inaccessible for many
months! (See previous pos
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On 07/02/2013 12:36 PM, John Horne wrote:
> On Tue, 2013-07-02 at 14:42 +0100, Sam Wilson wrote:
>
>> Can anyone here give examples of the types of various software
>> that will not operate without a PTR record?
>>
> Nope, and our entire reverse zone
On Tue, 2013-07-02 at 14:42 +0100, Sam Wilson wrote:
> Can anyone here give examples of the types of various software that will
> not operate without a PTR record?
>
Nope, and our entire reverse zone was externally inaccessible for many
months! (See previous posts on the bind9-users list from me
In article ,
Daniel McDonald wrote:
> The other place reverse DNS is routinely queried is SMTP. If you care
> enough to send mail, you should care enough to set up your reverse entries
> realistically so that spam filters will recognize that you are trying to
> actively manage your email server
On 7/2/13 8:42 AM, "Sam Wilson" wrote:
> There may be a subtle language thing going on here. I read the original
> post above as saying, literally, "you need PTR records because various
> software tries to match A and PTR records". It doesn't say "you need
> PTR records because some systems req
On 2 July 2013 14:42, Sam Wilson wrote:
> Can anyone here give examples of the types of various software that will
> not operate without a PTR record?
There have already been numerous listings of software that require
reverse lookups. SMTP being the main one. Other services like IRC and
some data
In article ,
Matus UHLAR - fantomas wrote:
> >> >In article ,
> >> > Charles Swiger wrote:
> >> >> Certainly. Various software performs what's called a double-reverse
> >> >> lookup
> >> >> to confirm that the A and PTR records match.
>
> >In article ,
> > Matus UHLAR - fantomas wrote:
> >>
>In article ,
> Charles Swiger wrote:
>> Certainly. Various software performs what's called a double-reverse
>> lookup
>> to confirm that the A and PTR records match.
In article ,
Matus UHLAR - fantomas wrote:
He apparently meant exactly the same. Also calles FcRDNS - "forward
confirmed" or
In article ,
Matus UHLAR - fantomas wrote:
> >> On Jun 28, 2013, at 10:54 AM, "Ward, Mike S" wrote:
> >> > Hello all, is there any reason to setup reverse address entries for a
> >> > zone?
>
> >In article ,
> > Charles Swiger wrote:
> >> Certainly. Various software performs what's called a
On Jun 28, 2013, at 10:54 AM, "Ward, Mike S" wrote:
> Hello all, is there any reason to setup reverse address entries for a zone?
In article ,
Charles Swiger wrote:
Certainly. Various software performs what's called a double-reverse lookup
to confirm that the A and PTR records match.
On 0
In article ,
Charles Swiger wrote:
> On Jun 28, 2013, at 10:54 AM, "Ward, Mike S" wrote:
> > Hello all, is there any reason to setup reverse address entries for a zone?
>
> Certainly. Various software performs what's called a double-reverse lookup
> to confirm that the A and PTR records match
On Fri, 2013-06-28 at 13:57 -0400, Novosielski, Ryan wrote:
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>
> The short answer is "some software once cared." Does it still now, I'm
> not sure. But we do it.
SMTP does, IRC does
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users@lists.isc.org
Subject: Re: Reverse address entries
At about Friday, June 28, 2013 10:54 AM Ward, Mike S"
mailto:mw...@ssfcu.org>> wrote:
>Hello all, is there any reason to setup reverse address entries
>for a zone?
It very much depends on the reasons for the forward
At about Friday, June 28, 2013 10:54 AM Ward, Mike S" wrote:
>Hello all, is there any reason to setup reverse address entries
>for a zone?
It very much depends on the reasons for the forward entries.
For example:
Commercial backup software for Microsoft servers require
forward-reverse-forwa
On Fri, 28 Jun 2013 13:57:44 -0400
"Novosielski, Ryan" wrote:
> The short answer is "some software once cared." Does it still now, I'm
> not sure. But we do it.
Some still does
Niall O'Reilly
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On Fri, 2013-06-28 at 17:54 +, Ward, Mike S wrote:
> Hello all, is there any reason to setup reverse address entries for a
> zone? I have asked some of the admins here and the consensus from them
> is that only A records are necessary. Is this true?
(IPv4 hat on)
I've taught my staff to plan u
On Jun 28, 2013, at 10:54 AM, "Ward, Mike S" wrote:
> Hello all, is there any reason to setup reverse address entries for a zone?
Certainly. Various software performs what's called a double-reverse lookup
to confirm that the A and PTR records match.
> I have asked some of the admins here and th
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The short answer is "some software once cared." Does it still now, I'm
not sure. But we do it.
On 06/28/2013 01:56 PM, Ward, Mike S wrote:
> Hello all, is there any reason to setup reverse address entries for
> a zone? I have asked some of the admins
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