https://issues.apache.org/SpamAssassin/show_bug.cgi?id=7033
Bug ID: 7033
Summary: dns: no callback unusual errors seen in logs
Product: Spamassassin
Version: 3.4.0
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: spamc/spamd
Assignee: [email protected]
Reporter: [email protected]
After upgrading to 3.4.0 I see some errors about "dns: no callback" from time
to time (no more than 10 a day). But I think that the DNS requests and replies
are correct.
Example 1:
Apr 11 08:53:10 spamd[9033]: dns: no callback for id
24333/IN/A/planeo.com.dbl.spamhaus.org, ignored; packet: ;; Answer received
from 127.0.0.1 (120 bytes)
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; HEADER SECTION
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; id = 24333
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; qr = 1 aa = 0 tc = 0 rd = 1 opcode =
QUERY
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; ra = 1 z = 0 ad = 0 cd = 0 rcode =
NXDOMAIN
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; qdcount = 1 ancount = 0 nscount = 1
arcount = 1
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; do = 0
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; EDNS version 0
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; flags: 0000
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; rcode: NOERROR
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; size: 4096
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; option:
Apr 11 08:53:10 spamd[9033]: dns: [...]
Apr 11 08:53:10 spamd[9033]: dns: [...]
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; QUESTION SECTION (1 record)
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; planeo.com.dbl.spamhaus.org. IN A
Apr 11 08:53:10 spamd[9033]: dns: [...]
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; ANSWER SECTION (0 records)
Apr 11 08:53:10 spamd[9033]: dns: [...]
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; AUTHORITY SECTION (1 record)
Apr 11 08:53:10 spamd[9033]: dns: [...] dbl.spamhaus.org. 60 IN SOA
need.to.know.only. hostmaster.spamhaus.org. (
Apr 11 08:53:10 spamd[9033]: dns: [...] 1404110652 ;serial
Apr 11 08:53:10 spamd[9033]: dns: [...] 3600 ;refresh
Apr 11 08:53:10 spamd[9033]: dns: [...] 600 ;retry
Apr 11 08:53:10 spamd[9033]: dns: [...] 432000 ;expire
Apr 11 08:53:10 spamd[9033]: dns: [...] 60 ) ;minimum
Apr 11 08:53:10 spamd[9033]: dns: [...]
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; ADDITIONAL SECTION (1 record)
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; EDNS version 0
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; flags: 0000
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; rcode: NOERROR
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; size: 4096
Apr 11 08:53:10 spamd[9033]: dns: [...] ;; option:
Apr 11 08:53:10 spamd[9033]: dns: no likely matching queries for id 24333
According to spamhaus doc, NXDOMAIN is ok:
http://www.spamhaus.org/faq/section/Spamhaus%20DBL#291
Example 2:
Apr 8 08:41:22 spamd[17799]: dns: no callback for id
44248/IN/A/241.2.144.193.list.dnswl.org, ignored; packet: ;; Answer received
from 127.0.0.1 (560 bytes)
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; HEADER SECTION
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; id = 44248
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; qr = 1 aa = 0 tc = 0 rd = 1 opcode
= QUERY
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; ra = 1 z = 0 ad = 0 cd = 0 rcode =
NOERROR
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; qdcount = 1 ancount = 1 nscount =
12 arcount = 17
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; do = 0
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; EDNS version 0
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; flags: 0000
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; rcode: NOERROR
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; size: 4096
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; option:
Apr 8 08:41:22 spamd[17799]: dns: [...]
Apr 8 08:41:22 spamd[17799]: dns: [...]
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; QUESTION SECTION (1 record)
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; 241.2.144.193.list.dnswl.org. IN A
Apr 8 08:41:22 spamd[17799]: dns: [...]
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; ANSWER SECTION (1 record)
Apr 8 08:41:22 spamd[17799]: dns: [...] 241.2.144.193.list.dnswl.org. 28800 IN
A 127.0.10.2
Apr 8 08:41:22 spamd[17799]: dns: [...]
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; AUTHORITY SECTION (12 records)
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
h.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
f.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
k.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
b.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
e.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
c.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
i.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
j.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
g.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
l.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
a.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...] list.dnswl.org. 63679 IN NS
d.ns.dnswl.org.
Apr 8 08:41:22 spamd[17799]: dns: [...]
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; ADDITIONAL SECTION (17 records)
Apr 8 08:41:22 spamd[17799]: dns: [...] a.ns.dnswl.org. 63679 IN A 85.25.63.16
Apr 8 08:41:22 spamd[17799]: dns: [...] b.ns.dnswl.org. 63679 IN A
74.208.14.82
Apr 8 08:41:22 spamd[17799]: dns: [...] c.ns.dnswl.org. 63679 IN A
208.67.172.131
Apr 8 08:41:22 spamd[17799]: dns: [...] d.ns.dnswl.org. 63679 IN A
194.124.232.115
Apr 8 08:41:22 spamd[17799]: dns: [...] e.ns.dnswl.org. 63679 IN A
88.198.92.228
Apr 8 08:41:22 spamd[17799]: dns: [...] e.ns.dnswl.org. 63679 IN AAAA
2a01:4f8:131:3e1::66
Apr 8 08:41:22 spamd[17799]: dns: [...] f.ns.dnswl.org. 63679 IN A 85.25.63.16
Apr 8 08:41:22 spamd[17799]: dns: [...] g.ns.dnswl.org. 63679 IN A 38.229.76.4
Apr 8 08:41:22 spamd[17799]: dns: [...] g.ns.dnswl.org. 63679 IN AAAA
2620:0:6b0:a:250:56ff:fe99:4d
Apr 8 08:41:22 spamd[17799]: dns: [...] h.ns.dnswl.org. 63679 IN A
194.109.9.15
Apr 8 08:41:22 spamd[17799]: dns: [...] i.ns.dnswl.org. 63679 IN A
64.71.152.40
Apr 8 08:41:22 spamd[17799]: dns: [...] i.ns.dnswl.org. 63679 IN AAAA
2600:3c01::f03c:91ff:fe96:340b
Apr 8 08:41:22 spamd[17799]: dns: [...] j.ns.dnswl.org. 63679 IN A
80.237.138.27
Apr 8 08:41:22 spamd[17799]: dns: [...] k.ns.dnswl.org. 63679 IN A
173.255.241.134
Apr 8 08:41:22 spamd[17799]: dns: [...] l.ns.dnswl.org. 63679 IN A
203.26.24.89
Apr 8 08:41:22 spamd[17799]: dns: [...] l.ns.dnswl.org. 63679 IN A
203.26.24.88
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; EDNS version 0
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; flags: 0000
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; rcode: NOERROR
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; size: 4096
Apr 8 08:41:22 spamd[17799]: dns: [...] ;; option:
Apr 8 08:41:22 spamd[17799]: dns: no likely matching queries for id 44248
According to dnswl doc, 127.0.10.2 reply is correct:
http://www.dnswl.org/tech#returncodes
I don't know why these DNS lookups are failing.
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