http://issues.apache.org/SpamAssassin/show_bug.cgi?id=4751
Summary: RBL lookups are always skipped under some conditions
Product: Spamassassin
Version: 3.1.0
Platform: Other
OS/Version: other
Status: NEW
Severity: normal
Priority: P5
Component: spamassassin
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
SA parses Received headers in an attempt to do an RBL lookup on the 'from' host.
However, within SA, RBL lookups are skipped if the 'by' host resolves to a
private IP (such as 10.<whatever>). Since any resolution of the 'by' host
inside our network will always net a private IP, RBL lookups are skipped.
I imagine it to be a very common setup that IPs resolve to private ranges inside
the local network and public ranges only from the outside. Thus, any SA scans
taking place within such a network will always skip RBL checks.
An example:
Received: from remote-host ([a.b.c.d]) by sub.domain.com ([e.f.g.h])
// etc..
SpamAssassin ignores [e.f.g.h] and does an lookup on sub.domain.com to get it's
IP. Inside the network where SpamAssassin is running the ip resolves to
10.0.0.1 (for example). There is a implicit trust of all private networks and
since trusted ips don't do RBL lookups this is the problem.
--
Arvel Hathcock
[EMAIL PROTECTED]
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