NXDomain for AAAA at vtext.com
John D Smerdon
jds at smerdon.livonia.mi.us
Sat Nov 2 17:00:51 UTC 2002
I am trying to send mail to vtext.com (Verizon Cell Phone SMS). My system
is running NetBSD/i386 1.6 with bind "8.3.3-REL-NOESW" and the Verizon DNS
servers claim "9.2.1".
My system is configured for IPv6 and sendmail does a lookup for the AAAA
record first. Verizon's DNS servers respond with NXDomain. Shouldn't they
respond with NoError and no answer records? Sendmail then does a lookup
for the A record and seems to have cached the NXDomain reply.
The result is that I am unable to send an email to my new phone.
Is my DNS at fault or theirs?
Results from a `dig smtp.css.vtext.com aaaa ; dig smtp.css.vtext.com a`
tcpdump on lo0:
11:46:04.781297 10.1.1.33.59538 > 10.1.1.33.53: 2+ AAAA?
smtp.css.vtext.com. (36)
11:46:04.884862 10.1.1.33.53 > 10.1.1.33.59538: 2 NXDomain 0/0/0 (36)
11:46:04.906100 10.1.1.33.59537 > 10.1.1.33.53: 2+ A?
smtp.css.vtext.com. (36)
11:46:04.907856 10.1.1.33.53 > 10.1.1.33.59537: 2 NXDomain 0/0/0 (36)
tcpdump on ethernet:
11:46:04.783478 208.176.108.1.59567 > 66.174.3.4.53: 20445 AAAA?
smtp.css.vtext.com. (36)
11:46:04.883994 66.174.3.4.53 > 208.176.108.1.59567: 20445 NXDomain-
0/0/0 (36)
$dig @66.174.6.71 version.bind chaos txt
version.bind. 0S CHAOS TXT "9.2.1"
Answers for various queries:
vtext.com. 2D IN NS NJBDNS2.vtext.com.
vtext.com. 2D IN NS CAWCNS1.vtext.com.
vtext.com. 2D IN NS CAWCNS2.vtext.com.
vtext.com. 2D IN NS NJBDNS1.vtext.com.
NJBDNS2.vtext.com. 2D IN A 66.174.3.72
CAWCNS1.vtext.com. 2D IN A 66.174.6.71
CAWCNS2.vtext.com. 2D IN A 66.174.6.72
NJBDNS1.vtext.com. 2D IN A 66.174.3.71
vtext.com. 30M IN MX 100 smtp.css.vtext.com.
smtp.css.vtext.com. 0S IN A 66.174.3.10
More information about the bind-users
mailing list