 |  |
Hello Warren,
Re: DNS Expert Inconsistencies
From: Men & Mice Support
Date: Monday, November 20, 2000
Time: 6:26:24 pm
My comments are to be found below.
At 7:01 PM -0700 11/20/00, Warren Michelsen wrote:
> Why would DNS Expert report, among other things, that there are no
>MX records in the zone for pageud.k12.az.us?
>
>Here's the detailed report and after that is a zone transfer I got.
>
> DNS Expert
> Detailed Report for pageud.k12.az.us.
> 11/20/00, 6:48 PM, using the analysis setting "My Settings"
>======================================================================
>
>Information
>----------------------------------------------------------------------
>Serial number: 1998012845
>Primary name server: dns1.pageud.k12.az.us.
>Primary mail server: pageud.k12.az.us.
>Number of records: 15 (1 NS, 1 MX, 10 A, 3 CNAME, 0 PTR, 0
> Other)
>
>
>Errors
>----------------------------------------------------------------------
>o The server "dns2.pageud.k12.az.us." did not reply
> The server "dns2.pageud.k12.az.us." did not reply when it was
> queried for the name "pageud.k12.az.us.". This indicates that
> the server is not running, or it is currently unreachable.
>
>o Unable to resolve the host name "proxy.pageud.k12.az.us." used in
> the CNAME record "page_proxy.pageud.k12.az.us."
> It was not possible to resolve the host name
> "proxy.pageud.k12.az.us." which is used in the CNAME record for
> "page_proxy.pageud.k12.az.us." This indicates that a host with
> the name "proxy.pageud.k12.az.us." does not exist.
>
>o There are no MX records in the zone
> The zone contains no MX records. This will cause delivery
> problems for mail sent to a user in this zone. Every zone should
> contain at least one MX record for successful mail delivery.
>
>o The server "blackhole.isi.edu." did not reply
> The server "blackhole.isi.edu." did not reply when it was queried
> for the name "1.0.1.10.in-addr.arpa.". This indicates that the
> server is not running, or it is currently unreachable.
>
>o The server "blackhole.ep.net." did not reply
> The server "blackhole.ep.net." did not reply when it was queried
> for the name "1.0.1.10.in-addr.arpa.". This indicates that the
> server is not running, or it is currently unreachable.
>
>
>Warnings
>----------------------------------------------------------------------
>o There is just one NS record in the zone
> The zone contains just one NS record. Every zone should contain
> two or more NS records, and the NS records in the zone should
> match the delegation data for the domain.
>
>o The name server "ns01.army.mil." refused to answer a query
> The server "ns01.army.mil." refused to answer a query. This
> server will not be used to look up information about the zone.
>
>
>----------------------------------------------------------------------
>end of report
>
>
>
>Query: pageud.k12.az.us. Query type: Zone transfer
>Recursive query: n/a Authoritative answer: n/a
>Query time: 11106 ms. Server name: dns1.pageud.k12.az.us
>
> pageud.k12.az.us. 86400 SOA dns1.pageud.k12.az.us.
> hostmaster.pageud.k12.az.us.
> 1998012845 ; serial
> 86400 ; refresh (1 day)
> 3600 ; retry (1 hour)
> 604800 ; expire (7 days)
> 86400 ; minimum (1 day)
> pageud.k12.az.us. 86400 A 63.228.155.251
> pageud.k12.az.us. 3600 NS dns2.pageud.k12.az.us.
> bobcats.pageud.k12.az.us. 86400 A 10.4.0.10
> doap_16742.pageud.k12.az.us. 86400 A 63.228.155.253
> mail.pageud.k12.az.us. 86400 A 63.228.155.251
> mail.pageud.k12.az.us. 86400 MX 5 pageud.k12.az.us.
> page-cb-vlan1.pageud.k12.az.us. 86400 A 10.1.0.1
> page-fw.pageud.k12.az.us. 86400 A 192.168.1.1
> page_cd2.pageud.k12.az.us. 86400 A 10.1.0.13
> page_proxy.pageud.k12.az.us. 86400 CNAME proxy.pageud.k12.az.us.
> panthers.pageud.k12.az.us. 86400 A 10.5.0.10
> pusd_mail.pageud.k12.az.us. 86400 CNAME mail.pageud.k12.az.us.
> smtp.pageud.k12.az.us. 86400 CNAME mail.pageud.k12.az.us.
> snmp.pageud.k12.az.us. 86400 A 10.1.0.20
> www.pageud.k12.az.us. 86400 A 63.228.155.252
Note that your MX record is named "mail.pageud.k12.az.us" and points
to "pageud.k12.az.us" as the mail server. This is probably the
reverse of what you intended. Most likely, what you intended was:
pageud.k12.az.us. MX 5 mail.pageud.k12.az.us.
>On top of that, DNS Expert reports only one NS record (as the zone
>transfer shows) yet doing a lookup on dns1.pageud.k12.az.us results
>in:
>
>Query: dns1.pageud.k12.az.us. Query type: Any record
>Recursive query: Yes Authoritative answer: No
>Query time: 355 ms. Server name: n/a
>
>Answer:
> dns1.pageud.k12.az.us. 10861 A 63.228.155.251
>
>Authority:
> pageud.k12.az.us. 11433 NS dns1.pageud.k12.az.us.
> pageud.k12.az.us. 11433 NS dns2.pageud.k12.az.us.
>
>Additional:
> dns2.pageud.k12.az.us. 11433 A 63.228.155.250
Notice that the response is marked as non-authoritative, and that the
TTL's are not round numbers. This indicates that the answer was
obtained from some server other than yours, and that the records
given were retrieved from that server's cache.
The az.us domain is delegated to a list of servers that includes
ns.isi.edu. ns.isi.edu currently has in its cache the following
records:
Answer:
dns1.pageud.k12.az.us. 8785 A 63.228.155.251
Authority:
pageud.k12.az.us. 9820 NS dns1.pageud.k12.az.us.
pageud.k12.az.us. 9820 NS dns2.pageud.k12.az.us.
Additional:
dns2.pageud.k12.az.us. 9820 A 63.228.155.250
It also, however, contains these records (not cached, but derived
from its local zone files):
k12.az.us. 604800 NS azedlink1.k12.az.us.
k12.az.us. 604800 NS ns2.unicon.net.
If I query azedlink1.k12.az.us for records regarding
pageud.k12.az.us, it gives back these non-cached records:
pageud.k12.az.us. 86400 NS dns1.pageud.k12.az.us.
pageud.k12.az.us. 86400 NS dns2.pageud.k12.az.us.
dns1.pageud.k12.az.us. 86400 A 63.228.155.251
dns2.pageud.k12.az.us. 86400 A 63.228.155.250
along with these cached records:
pageud.k12.az.us. 44657 A 63.228.155.251
pageud.k12.az.us. 79382 SOA dns1.pageud.k12.az.us.
hostmaster.pageud.k12.az.us.
1998012845 ; serial
86400 ; refresh (1 day)
3600 ; retry (1 hour)
604800 ; expire (7 days)
600 ; minimum (10 minutes)
(Note that the SOA record is broken across several lines; this is
just how DNS Expert formats it, for easier reading.)
Please contact us again if you have any further questions or comments.
____________________________________________________________________
Chris Buxton Men & Mice
cbuxton@menandmice.com We Make DNS Easy!
Messages In This Thread:
Return to Digital Point Solutions' Home Page