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Boex,Matthew W. Matthew.Boex at cna.com
Thu Oct 25 14:17:57 UTC 2001


Kevin,

Thanks a lot for the reply.  I, sadly, am not the owner of the firewall
here.  I am having the owner look into it as I type this.  Below is the
output of dig cna.com mx on each box( I did run the dig cna.com mx multiple
times before this so you would figure it would be cached).  As you can see,
on sch1p297 it takes 5006 msec as opposed to sch1p312, 3 msec.  Also, I
noticed that the flags set in each are different.  sch1p297 has the "aa"
flag set every time which tells me that it has to go out and get the info
every time, no caching.  That is odd to me since I ran dig yahoo.com mx and
it didn't have the "aa" flag set.  So, it looks like sch1p297 isn't caching
for cna.com.  Weird.

Also, the authority records look different.  312 has -

;; AUTHORITY SECTION:
cna.com.                1d31m59s IN NS  DNS.cna.com.
cna.com.                1d31m59s IN NS  NS2.CW.NET.

while 297 has -

;; AUTHORITY SECTION:
cna.com.                2H IN NS        dns.cna.com.
cna.com.                2H IN NS        ns2.mci.net.
cna.com.                2H IN NS        ns2.cw.net.

how can that be?  I ran dig cna.com mx @"each server" and they are
consistent with what 297 has.  getting more weird every second..

Any ideas?

Matt

----------------------------------------------------------------------------
-------------------
sch1p312

dig cna.com mx

; <<>> DiG 8.3 <<>> cna.com mx 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 3
;; QUERY SECTION:
;;      cna.com, type = MX, class = IN

;; ANSWER SECTION:
cna.com.                32m42s IN MX    10 sch1p218.cna.com.

;; AUTHORITY SECTION:
cna.com.                1d31m59s IN NS  DNS.cna.com.
cna.com.                1d31m59s IN NS  NS2.CW.NET.

;; ADDITIONAL SECTION:
sch1p218.cna.com.       1h27m35s IN A   159.10.4.9
DNS.cna.com.            1d15h39m33s IN A  159.10.4.25
NS2.CW.NET.             1d23h49m56s IN A  204.70.57.242

;; Total query time: 3 msec
;; FROM: sch1p312 to SERVER: default -- 127.0.0.1
;; WHEN: Thu Oct 25 08:43:00 2001
;; MSG SIZE  sent: 25  rcvd: 140

----------------------------------------------------------------------------
-------------------
sch1p297

dig cna.com mx

; <<>> DiG 8.3 <<>> cna.com mx 
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 4
;; QUERY SECTION:
;;      cna.com, type = MX, class = IN

;; ANSWER SECTION:
cna.com.                2H IN MX        10 sch1p218.cna.com.

;; AUTHORITY SECTION:
cna.com.                2H IN NS        dns.cna.com.
cna.com.                2H IN NS        ns2.mci.net.
cna.com.                2H IN NS        ns2.cw.net.

;; ADDITIONAL SECTION:
sch1p218.cna.com.       2H IN A         159.10.4.9
dns.cna.com.            2H IN A         159.10.4.25
ns2.mci.net.            18h14m46s IN A  204.147.128.70
ns2.cw.net.             21h14m23s IN A  204.70.57.242

;; Total query time: 5006 msec
;; FROM: sch1p297 to SERVER: default -- 127.0.0.1
;; WHEN: Thu Oct 25 08:43:34 2001
;; MSG SIZE  sent: 25  rcvd: 178


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