https://issues.apache.org/SpamAssassin/show_bug.cgi?id=6573
Summary: Report for IPv6 IP hitting DNS BL/WL is broken
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: spamassassin
AssignedTo: [email protected]
ReportedBy: [email protected]
For IPv6 IP 2001:470:f329:1::1 in zone iprep.chaosreigns.com, it's reporting:
-0.1 RCVD_IN_IPREPDNS_100 RBL: Sender listed at
http://www.chaosreigns.com/iprep/, 100% ham
[0.0.0.1 listed in
0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.9.2.3.f.0.7.4.0.1.0.0.2.iprep.chaosreigns.com]
When it should be reporting:
-0.1 RCVD_IN_IPREPDNS_100 RBL: Sender listed at
http://www.chaosreigns.com/iprep/, 100% ham
[2001:470:f329:1::1 listed in
iprep.chaosreigns.com]
The IP was 2001:470:f329:1::1. In long form, that's
2001:0470:f329:0001:0000:0000:0000:0001. So the PTR record is all the
integers, in reverse order, with dots in between all of them:
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.9.2.3.f.0.7.4.0.1.0.0.2.ip6.arpa.
Which makes the DNS BL/WL record in zone iprep.chaosreigns.com:
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.9.2.3.f.0.7.4.0.1.0.0.2.iprep.chaosreigns.com.
So it looks like the report is just splitting that at the 4th dot, and
considering the first part the IP (reversed), and the second part the zone,
which is reasonable enough for IPv4, but wrong for IPv6.
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