Why I can not get SRV records from all domains??? No matter what I search,
always return a authority record or nothing. Is it useful for using SRV for
search _sip._udp.domain.com? Then why no domain in this world has the SRV
records: _sip._udp.*; _http._tcp.*; _ldap._udp.*??
Did I miss anything? Anyone please help me!!! Thanks a lot.
C:\>java dig _ldap._tcp.microsoft.com SRV IN
; java dig 0.0
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63658
;; flags: qr aa ; qd: 1 an: 0 au: 1 ad: 0
;; QUESTIONS:
;; _ldap._tcp.microsoft.com., type = SRV, class = IN
;; ANSWERS:
;; AUTHORITY RECORDS:
_tcp.microsoft.com. 3600 IN SOA dns1.cp.msft.net.
msnhst.microso
ft.com. (
4 ; serial
1800 ; refresh
600 ; retry
6220800 ; expire
3600 ) ; minimum
;; ADDITIONAL RECORDS:
C:\tmp\dnsjava-1.2.3>java dig _http._tcp.cisco.com SRV IN
; java dig 0.0
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6332
;; flags: qr aa ra ; qd: 1 an: 0 au: 1 ad: 0
;; QUESTIONS:
;; _http._tcp.cisco.com., type = SRV, class = IN
;; ANSWERS:
;; AUTHORITY RECORDS:
_tcp.cisco.com. 3600 IN SOA adc-sjc-101.cisco.com.
admin.cisco.com.
(
70 ; serial
900 ; refresh
600 ; retry
86400 ; expire
3600 ) ; minimum
;; ADDITIONAL RECORDS:
;; done (106 bytes)
Best wishes,
Yours truly, Robert Chen
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