Date: Sat, 29 Dec 2001 02:38:19 +0100 From: "Maxlor" <mail@maxlor.com> To: <freebsd-questions@freebsd.org> Subject: broken resolver Message-ID: <NDBBKGBBKDPDNFIFCJEJMEILCLAA.mail@maxlor.com>
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Hey, I'm having some problems resolving DNS records. I'll show you:
---------------------------------
root@Atlantis~$ host -d google.com
;; res_nmkquery(QUERY, google.com, IN, A)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61479
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; google.com, type = A, class = IN
;; Querying server (# 1) address = 10.0.0.1
;; new DG socket
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61479
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 0
;; google.com, type = A, class = IN
google.com. 4m8s IN A 216.239.37.100
google.com. 4m8s IN A 216.239.33.100
google.com. 23h59m8s IN NS ns4.google.com.
google.com. 23h59m8s IN NS ns1.google.com.
google.com. 23h59m8s IN NS ns2.google.com.
google.com. 23h59m8s IN NS ns3.google.com.
rcode = 0 (Success), ancount=2
google.com has address 216.239.37.100
google.com has address 216.239.33.100
;; res_nmkquery(QUERY, google.com, IN, MX)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61480
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; google.com, type = MX, class = IN
;; Querying server (# 1) address = 10.0.0.1
;; new DG socket
;; timeout
;; Querying server (# 1) address = 10.0.0.1
;; timeout
res_nsend failed
root@Atlantis~$ host -dt MX google.com
;; res_nmkquery(QUERY, google.com, IN, MX)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24687
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; google.com, type = MX, class = IN
;; Querying server (# 1) address = 10.0.0.1
;; new DG socket
;; timeout
;; Querying server (# 1) address = 10.0.0.1
;; timeout
res_nsend failed
;; res_nmkquery(QUERY, google.com.intranet, IN, MX)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24688
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; google.com.intranet, type = MX, class = IN
;; Querying server (# 1) address = 10.0.0.1
;; new DG socket
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 24688
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; google.com.intranet, type = MX, class = IN
intranet. 10M IN SOA Atlantis.intranet.
postmaster.maxlor.com. (
2001092701 ; serial
2W ; refresh
1H ; retry
4W ; expiry
5D ) ; minimum
rcode = 3 (Non-existent domain), ancount=0
;; res_nmkquery(QUERY, google.com, IN, MX)
;; res_send()
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24689
;; flags: rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; google.com, type = MX, class = IN
;; Querying server (# 1) address = 10.0.0.1
;; new DG socket
;; timeout
;; Querying server (# 1) address = 10.0.0.1
;; timeout
res_nsend failed
Host not found, try again.
---------------------------------
As you can see, the A record resolve fine, but the MX record results in a
timeout. This behaviour appears with all domain names. NS records work fine
as well, while eg SOA and PTR result in a timeout again.
I'm running:
root@Atlantis~$ uname -a
FreeBSD Atlantis 4.4-STABLE FreeBSD 4.4-STABLE #3: Thu Oct 4 10:59:17 CEST
2001 ben@Atlantis:/usr/src/sys/compile/ATLANTIS i386
To clear up the confusion, the machine Atlantis has two nics, one connects
it to the net, one connects it to my intranet. The internal domain name is
"Atlantis.intranet", "intranet" is the TLD.
I'm running BIND 9.1.3 on this machine.
If I use a DNS server on any other machine from atlantis, it does not work.
If i use the same other DNS server from another computer on the internet, it
works. This leads me to believe that somehom Atlantis' resolver libraries
are broken or something like that.
Oh yeah, my resolv.conf, if you think it helps:
search intranet
nameserver 10.0.0.1
Ok. I really hope you can give me a hint here, as the inability to look up
MX records is seriously hampering my ability to send mail...
Have a lot of fun, Maxlor
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