Starting zone checks for yahoogroups.co.uk
Checking zone name
Resolving name-server address-> ns4.yahoo.com. 94820 IN A 68.142.196.63Checking existence of zone-> yahoogroups.co.uk. 21600 IN SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2011090600 ; Serial 3600 ; Refresh 900 ; Retry 604800 ; Expire 600 ) ; Minimum TTLChecking NS records-> yahoogroups.co.uk. 172800 IN NS ns1.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns4.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns3.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns5.yahoo.com.### Warning: Origin server hidden-master.yahoo.com not listed in NS records
Checking nameserver authority and synchronization-> ns4.yahoo.com. 94820 IN A 68.142.196.63 -> 63.196.142.68.in-addr.arpa. 1800 IN PTR ns4.yahoo.com.Probing name server ns4.yahoo.com (68.142.196.63)-> yahoogroups.co.uk. 21600 IN SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2011090600 ; Serial 3600 ; Refresh 900 ; Retry 604800 ; Expire 600 ) ; Minimum TTL -> yahoogroups.co.uk. 172800 IN NS ns1.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns4.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns3.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns5.yahoo.com. -> ns1.yahoo.com. 172800 IN A 68.180.131.16 -> 16.131.180.68.in-addr.arpa. 1800 IN PTR ns1.yahoo.com.Probing name server ns1.yahoo.com (68.180.131.16)-> yahoogroups.co.uk. 21600 IN SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2011090600 ; Serial 3600 ; Refresh 900 ; Retry 604800 ; Expire 600 ) ; Minimum TTL -> yahoogroups.co.uk. 172800 IN NS ns1.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns4.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns3.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns5.yahoo.com. -> ns5.yahoo.com. 172800 IN A 119.160.247.124 -> 124.247.160.119.in-addr.arpa. 1800 IN PTR ns5.yahoo.com.Probing name server ns5.yahoo.com (119.160.247.124)-> yahoogroups.co.uk. 21600 IN SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2011090600 ; Serial 3600 ; Refresh 900 ; Retry 604800 ; Expire 600 ) ; Minimum TTL -> yahoogroups.co.uk. 172800 IN NS ns1.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns4.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns3.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns5.yahoo.com. -> ns3.yahoo.com. 172800 IN A 121.101.152.99 -> 99.152.101.121.in-addr.arpa. 1800 IN PTR ns3.yahoo.com.Probing name server ns3.yahoo.com (121.101.152.99)-> yahoogroups.co.uk. 21600 IN SOA hidden-master.yahoo.com. hostmaster.yahoo-inc.com. ( 2011090600 ; Serial 3600 ; Refresh 900 ; Retry 604800 ; Expire 600 ) ; Minimum TTL -> yahoogroups.co.uk. 172800 IN NS ns1.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns4.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns3.yahoo.com. -> yahoogroups.co.uk. 172800 IN NS ns5.yahoo.com.Decided to use ns4.yahoo.com (68.142.196.63) for zone check
Checking whether ns4.yahoo.com knows an A record for its own name-> ns4.yahoo.com. 94820 IN A 68.142.196.63Checking whether ns4.yahoo.com is able to reverse-map its own IP address
Checking connectivity with other nameservers
### Error: Unable to resolve www.ucw.cz: REFUSED
### Warning: ns4.yahoo.com is unable to resolve www.ucw.cz (maybe it's non-recursive)
### Error: Unable to resolve atrey.karlin.mff.cuni.cz: REFUSED
### Warning: ns4.yahoo.com is unable to resolve atrey.karlin.mff.cuni.cz (maybe it's non-recursive)
### Error: Unable to resolve www.ibiblio.org: REFUSED
### Warning: ns4.yahoo.com is unable to resolve www.ibiblio.org (maybe it's non-recursive)
Checking mapping of localhost-> localhost. 3600 IN A 127.0.0.1### Warning: Reverse mapping of 127.0.0.1 at ns4.yahoo.com doesn't work [see RFC1912:4.1 for details]
Checking consistency of zone records
Summary: 3 errors, 5 warnings