What is the meaning of these BIND log messages?

Posted by javano on Server Fault See other posts from Server Fault or by javano
Published on 2012-10-14T17:50:04Z Indexed on 2012/10/14 21:39 UTC
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logging

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bind

Please clarify for me the meaning of the following BIND messages in syslog, these are from a DNS resolver. Whilst I think I understand them, I don't know what all four mean, so I think it's best if someone will clarify for me:

1.
Oct 14 18:36:34 resolver1 named[14958]: lame server resolving 'arrivatn.co.uk' (in 'arrivatn.co.uk'?): 212.103.224.56#53

2.  
Oct 14 18:36:36 resolver1 named[14958]: unexpected RCODE (SERVFAIL) resolving '148.128.183.212.in-addr.arpa/PTR/IN': 212.183.136.42#53

4.
Oct 14 18:38:49 resolver1 named[14958]: unexpected RCODE (REFUSED) resolving 'internal-server.ournetwork.com/AAAA/IN': auth.dns.server.ip#53

3.  
Oct 14 18:39:05 resolver1 named[14958]: client 89.187.127.110#42034: query (cache) 'image.sinajs.cn/A/IN' denied

Thank you.

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