DNS Query returns SERVFAIL

[Mark_Andrews at isc.org]

> 
> When using nslookup and quering an address such as FLASH.NET through
> our DNS server it returns rcode=SERVFAIL.
> 
> If I attached directly to sprint DNS servers it returns rcode=NOERROR.
> 
> If I set type=all in nslookup both DNS server will return an answer. 
> 
> My email server picks up the SERVFAIL and will not delivery any mail. 
> Below shows the two defferent returns from nslookup. Any comments
> would be appreacheated.

	Look for what is missing in the response below.
	Authoritative answer (aa) is missing.  This indicated that
	the server for the zone detected a error when loading the
	master file.

	Mark
> 
> CORRECT:
> 
> SendRequest(), len 27
>     HEADER:
>         opcode = QUERY, id = 5, rcode = NOERROR
>         header flags:  query, want recursion
>         questions = 1,  answers = 0,  authority records = 0, 
> additional = 0
> 
>     QUESTIONS:
>         flash.net, type = A, class = IN
> 
> ------------
> ------------
> Got answer (86 bytes):
>     HEADER:
>         opcode = QUERY, id = 5, rcode = NOERROR
>         header flags:  response, want recursion, recursion avail.
>         questions = 1,  answers = 0,  authority records = 1, 
> additional = 0
> 
>     QUESTIONS:
>         flash.net, type = A, class = IN
>     AUTHORITY RECORDS:
>     ->  flash.net
>         type = SOA, class = IN, dlen = 47
>         ttl = 2197 (36 mins 37 secs)
>         primary name server = ns1.flash.net
>         responsible mail addr = hostmaster.prodigy.net
>         serial  = 2002062800
>         refresh = 900 (15 mins)
>         retry   = 300 (5 mins)
>         expire  = 604800 (7 days)
>         default TTL = 86400 (1 day)
> 
> ------------
> Name:    flash.net
> 
> 
> 
> 
> 
> 
> 
> INCORRECT:
>    
> SendRequest(), len 27
>     HEADER:
>         opcode = QUERY, id = 6, rcode = NOERROR
>         header flags:  query, want recursion
>         questions = 1,  answers = 0,  authority records = 0, 
> additional = 0
> 
>     QUESTIONS:
>         flash.net, type = A, class = IN
> 
> ------------
> ------------
> Got answer (27 bytes):
>     HEADER:
>         opcode = QUERY, id = 6, rcode = SERVFAIL
>         header flags:  response, want recursion, recursion avail.
>         questions = 1,  answers = 0,  authority records = 0, 
> additional = 0
> 
>     QUESTIONS:
>         flash.net, type = A, class = IN
> 
> ------------
> *** [63.175.128.6] can't find flash.net: Server failed
> >
> 
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org