big problem - possibly dns?
Dana Holland
dana.holland at navarrocollege.edu
Tue Dec 12 22:52:00 UTC 2006
We've got a problem here that seems to be DNS related, but I'm not sure.
We have a website http://blackboard.navarrocollege.edu. Yesterday
some people started reporting that they couldn't access the website.
Others can access it just fine.
The problems started when we moved to a gigaman circuit, with a new
firewall. At the same time we began looking at upgrading our DNS
server. Our primary server has been running Bind 4 (yes, I know!).
Yesterday I tested a Bind 8 configuration (in preparation for moving up
to Bind 9!). It appeared to be working, except that I had forgotten the
CNAME for the server I'm having problems with. I switched back to my
Bind 4 configuration thinking that we would function as before until I
could complete the move to the new Bind.
I'm not sure what I should post to help diagnose this. Below is the
primary zone file, and the in-addr.arpa. Note that we don't normally
have TTL set to 900 - we just did that while we were trying to figure
out this problem.
@ IN SOA dns.navarrocollege.edu.
root.dns.navarrocollege.edu. (
2006121204 ; Serial Number YYMMDDxxx
900 ; Refresh 2dary
900 ; 2dary retries after ..
604800 ; 2dary says primary is dead after ..
900 ) ; TTL in cache (12 hours) - 30 min (1800)
IN NS dns
IN NS dns2
navarrocollege.edu. IN MX 10 mailfoundry
navarrocollege.edu. IN A 205.165.189.178
mollybrown IN A 205.165.189.135
ftp IN CNAME mollybrown
astp IN A 205.165.189.139
webadvisor IN CNAME astp
testwa IN CNAME astp
calendar IN CNAME astp
ipac IN A 205.165.189.138
dns IN A 205.165.189.130
columbia IN CNAME dns
localhost IN A 127.0.0.1
sts IN A 205.165.189.178
www IN CNAME sts
layout IN CNAME sts
foundation IN CNAME sts
admin IN CNAME sts
sbdc IN CNAME sts
news IN CNAME sts
search IN CNAME sts
tour IN CNAME sts
collegeday IN CNAME sts
dns2 IN A 205.165.189.183
apollo16 IN A 205.165.189.176
blackboard IN CNAME apollo16
gemini IN A 205.165.189.182
mail IN CNAME gemini
pop IN CNAME gemini
gemini2 IN CNAME gemini
ldap IN A 205.165.189.180
mysql IN CNAME ldap
test IN A 205.165.189.179
navnet IN A 205.165.189.185
catalog IN A 205.165.189.174
mailfoundry IN A 205.165.189.184
navarrocollege.edu. IN TXT "v=spf1 mx mx:johnwyoung.org
mx:dana-holland.com mx:r
oxanndawson.info mx:roddymcdowall.info ~all"
gemini.navarrocollege.edu. IN TXT "v=spf1 a -all"
@ IN SOA dns.navarrocollege.edu.
root.dns.navarrocollege.edu. (
2006121203 ; Serial Number YYMMDDxxx
900 ; Refresh 2dary
900 ; 2dary retries after ..
604800 ; 2dary says primary is dead after ..
900 ) ; TTL in cache - 30 min
189.165.205.IN-ADDR.ARPA. IN NS dns.navarrocollege.edu.
189.165.205.IN-ADDR.ARPA. IN NS dns2.navarrocollege.edu.
130 IN PTR dns.navarrocollege.edu.
135 IN PTR mollybrown.navarrocollege.edu.
138 IN PTR ipac.navarrocollege.edu.
139 IN PTR astp.navarrocollege.edu.
178 IN PTR sts.navarrocollege.edu.
178 IN PTR dana-holland.com.
178 IN PTR johnwyoung.com.
178 IN PTR johnwyoung.net.
178 IN PTR johnwyoung.org.
178 IN PTR johnwyoung.info.
178 IN PTR dougboyte.com.
178 IN PTR cookplanetarium.us.
178 IN PTR cookcenter.us.
178 IN PTR pearcecollections.us.
178 IN PTR navarrocollege.org.
178 IN PTR navarrocollege.info.
176 IN PTR apollo16.navarrocollege.edu.
179 IN PTR mercury.navarrocollege.org.
183 IN PTR dns2.navarrocollege.edu.
180 IN PTR ldap.navarrocollege.edu.
182 IN PTR gemini.navarrocollege.edu.
184 IN PTR mailfoundry.navarrocollege.edu.
174 IN PTR catalog.navarrocollege.edu.
185 IN PTR navnet.navarrocollege.edu.
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