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Author Topic: rDNS of MX ???  (Read 2756 times)

jdisnard

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rDNS of MX ???
« on: June 04, 2011, 11:19:45 AM »

I'm trying to complete the "Professional" tests.
Is the solution to wait, or perhaps there is something I can do?

 


;; QUESTION SECTION:
;disnard.com.                   IN      MX

;; ANSWER SECTION:
disnard.com.            3600    IN      MX      0 underworld.disnard.com.
disnard.com.            3600    IN      MX      10 mx.disnard.com.



;; QUESTION SECTION:
;underworld.disnard.com.                IN      AAAA
;mx.disnard.com.                        IN      AAAA

;; ANSWER SECTION:
underworld.disnard.com. 3600    IN      AAAA    2001:470:1f0f:bf3::2329
mx.disnard.com.         3600    IN      AAAA    2001:470:1f0f:bf3::101



;; QUESTION SECTION:
;9.2.3.2.0.0.0.0.0.0.0.0.0.0.0.0.3.f.b.0.f.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. IN PTR
;1.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.3.f.b.0.f.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. IN PTR

;; ANSWER SECTION:
9.2.3.2.0.0.0.0.0.0.0.0.0.0.0.0.3.f.b.0.f.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 86400IN PTR underworld.disnard.com.
1.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.3.f.b.0.f.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa. 3600 IN PTR mx.disnard.com.



I'm using godaddy for now, but have begun looking at the Free DNS offered by he.net.
Made some entries, etc.... nothing authoritative.
Could that be the problem?

Regardless, the DNS is correct externally.



Thanks,
-Jon





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cholzhauer

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Re: rDNS of MX ???
« Reply #1 on: June 05, 2011, 07:24:56 AM »

What are you querying for?  It looks like your mx server has an AAAA address, but your nameservers don't.

Code: [Select]
[carl@mars ~]$ dig mx disnard.com

; <<>> DiG 9.6.-ESV-R3 <<>> mx disnard.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 22021
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;disnard.com.                   IN      MX

;; ANSWER SECTION:
disnard.com.            3600    IN      MX      10 mx.disnard.com.
disnard.com.            3600    IN      MX      0 underworld.disnard.com.

;; ADDITIONAL SECTION:
mx.disnard.com.         3600    IN      AAAA    2001:470:1f0f:bf3::101
underworld.disnard.com. 3600    IN      AAAA    2001:470:1f0f:bf3::2329

;; Query time: 194 msec
;; SERVER: 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1#53(2001:470:c27d:e000:88cb:fe1                                                                                                                     b:c4b0:92a1)
;; WHEN: Sun Jun  5 10:21:53 2011
;; MSG SIZE  rcvd: 131

[carl@mars ~]$ dig ns disnard.com

; <<>> DiG 9.6.-ESV-R3 <<>> ns disnard.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46434
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2

;; QUESTION SECTION:
;disnard.com.                   IN      NS

;; ANSWER SECTION:
disnard.com.            3574    IN      NS      ns05.domaincontrol.com.
disnard.com.            3574    IN      NS      ns06.domaincontrol.com.

;; ADDITIONAL SECTION:
ns05.domaincontrol.com. 3600    IN      A       216.69.185.3
ns06.domaincontrol.com. 3600    IN      A       208.109.255.3

;; Query time: 124 msec
;; SERVER: 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1#53(2001:470:c27d:e000:88cb:fe1                                                                                                                     b:c4b0:92a1)
;; WHEN: Sun Jun  5 10:22:19 2011
;; MSG SIZE  rcvd: 113

[carl@mars ~]$ dig aaaa mx.disnard.com

; <<>> DiG 9.6.-ESV-R3 <<>> aaaa mx.disnard.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12980
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mx.disnard.com.                        IN      AAAA

;; ANSWER SECTION:
mx.disnard.com.         3520    IN      AAAA    2001:470:1f0f:bf3::101

;; Query time: 1 msec
;; SERVER: 2001:470:c27d:e000:88cb:fe1b:c4b0:92a1#53(2001:470:c27d:e000:88cb:fe1b:c4b0:92a1)
;; WHEN: Sun Jun  5 10:23:13 2011
;; MSG SIZE  rcvd: 60

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jdisnard

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Re: rDNS of MX ???
« Reply #2 on: June 05, 2011, 09:41:47 AM »

What are you querying for?  It looks like your mx server has an AAAA address, but your nameservers don't.



When I attempt the "PROFESSIONAL" certification test:
The step I'm doing is:

Quote
Check if your mail server has working rDNS

 I'm confronted with:

Quote
"Your MX does not appear to have working RDNS".

I suppose you have revealed an important clue about the nameservers?  :)

To solve for that problem I have two options:

* Move to the Free he.net DNS, or

* Setup my own DNS servers.




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cholzhauer

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  • Posts: 2731
Re: rDNS of MX ???
« Reply #3 on: June 06, 2011, 05:17:14 AM »

Sorry, it's been too long since I've taken the tests and I don't remember which test requires you to do what.

I get the reverse lookup for your mx record with no problems...you might want to email ipv6@he.net and let them know...normally when this happens they have to kick the cache
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