We have had frequent DNS issues but almost all could be resolved by
completely removing all zones and rebuilding them from scratch.

I now have a DNS server that does not respond to any requests even after
a complete rebuild of the zones. I know the server is active because
requests time out so they are received but not replied to. I ran named in
debug mode and the log shows that requests are being received but time
out on the client side. This is Netware 6.5 SP5 and I also tried
Named.nlm from SP6. I have forwarders set up but any requests, whether
they should be resolved locally or forwarded, all time out.

I noticed the problem after I removed and reinstalled directory services
on this server, howerver the issue may have been there before this. It
appears that DDNS is not updating either.

These symptoms are VERY common for us but only 1 time before have we not
been able to fix it and in that case the problem went away after a
service pack update to sp5, though that probably isnt the same issue here.

Sample of named log:

Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050: UDP
request
Apr 10 14:33:28.000 client: client: debug 5: client 10.28.4.48#3050:
using view '_default'
Apr 10 14:33:28.000 security: client: debug 3: client 10.28.4.48#3050:
request is not signed
Apr 10 14:33:28.000 security: client: debug 3: client 10.28.4.48#3050:
recursion available: approved
Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050: query
Apr 10 14:33:28.000 security: client: debug 3: client 10.28.4.48#3050:
query (cache) approved
Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050:
replace
Apr 10 14:33:28.000 general: client: debug 3: clientmgr @94354d40:
createclients
Apr 10 14:33:28.000 general: client: debug 3: clientmgr @94354d40: recycle
Apr 10 14:33:28.000 resolver: dns/resolver: debug 1: createfetch:
ngwnameserver A
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: create
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: join
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fetch 8e1cc000 (fctx
8e1ef060): created
Apr 10 14:33:28.000 client: client: debug 3: client @7c62a540: udprecv
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: start
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: try
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
cancelqueries
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
getaddresses
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: query
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: resquery 7c62aa80
(fctx 8e1ef060): send
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: resquery 7c62aa80
(fctx 8e1ef060): sent
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: resquery 7c62aa80
(fctx 8e1ef060): senddone
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: resquery 7c62aa80
(fctx 8e1ef060): response
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
noanswer_response
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
ncache_message
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
cancelquery
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060: done
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
stopeverything
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
cancelqueries
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cf20
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cda0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1c5a0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1c820
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1c7a0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cba0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cd20
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cc20
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1c120
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cca0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1c920
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1cea0
Apr 10 14:33:28.000 database: dns/adb: debug 5: dns_adb_destroyfind on
find 92b1ce20
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
sendevents
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fetch 8e1cc000 (fctx
8e1ef060): destroyfetch
Apr 10 14:33:28.000 resolver: dns/resolver: debug 3: fctx 8e1ef060:
shutdown
Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050: send
Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050:
sendto
Apr 10 14:33:28.000 client: client: debug 3: client 10.28.4.48#3050:
senddone