R: Question about swupdl.adobe.com

[IDS Submit]

Good morning Giles,

 

the server on dns1.ids.it allow recursion for my IP

There is any other setting I have to enable to allow this “level recursion”?

 

Thanks and best regards

 

Michele

 

Da: bind-users-bounces at lists.isc.org
[mailto:bind-users-bounces at lists.isc.org] Per conto di Giles Coochey
Inviato: giovedì 9 ottobre 2014 15.32
A: bind-users at lists.isc.org
Oggetto: Re: Question about swupdl.adobe.com

 

On 09/10/2014 12:24, IDS Submit wrote:

Good morning,

 

I have BIND 9.10.1 x86 and I have error on query swupdl.adobe.com

 

------------------------------------------------------------------

> swupdl.adobe.com

Server:  dns1.ids.it

Address:  81.174.15.142

 

*** dns1.ids.it non è in grado di trovare swupdl.adobe.com: Non-existent
domain

------------------------------------------------------------------

 

See below... 



;; ANSWER SECTION:

swupdl.adobe.com.       5274    IN      CNAME   swupdl.wip4.adobe.com.

swupdl.wip4.adobe.com.  67      IN      CNAME
swupdl.adobe.com.edgesuite.net.

swupdl.adobe.com.edgesuite.net. 794 IN  CNAME   a1577.d.akamai.net.

a1577.d.akamai.net.     19      IN      A       2.18.240.203

a1577.d.akamai.net.     19      IN      A       2.18.240.210

 

It looks like adobe are entertaining use of a CNAME chain (a CNAME to a
CNAME which points to a CNAME which points to a CNAME which eventually
points to an A record).

I expect that the upstream server to dns1.ids.it doesn't implement this
level of recursion and as such doesn't return the full details.

Thanks




-- 
Regards,
 
Giles Coochey, CCNP, CCNA, CCNAS
NetSecSpec Ltd
+44 (0) 8444 780677
+44 (0) 7584 634135
http://www.coochey.net
http://www.netsecspec.co.uk
giles at coochey.net
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