http://issues.apache.org/SpamAssassin/show_bug.cgi?id=5726
Summary: FAKE_HELO_*, ROUND_THE_WORLD* incur a DNS lookup for
crappy results
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Platform: Other
OS/Version: other
Status: NEW
Severity: normal
Priority: P5
Component: Rules
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
FAKE_HELO_* all use lookup_ptr() under some circumstances. That method performs
a PTR lookup, and blocks waiting for the result. ROUND_THE_WORLD*, including
ROUND_THE_WORLD_LOCAL ironically, does the same.
Alternatively, maybe some of them should simply be deleted... here are their
freqs from STATISTICS-set1.txt:
0.038 0.0552 0.0078 0.877 0.60 2.70 ROUND_THE_WORLD_LOCAL
0.007 0.0101 0.0011 0.901 0.55 0.00 ROUND_THE_WORLD
0.055 0.0860 0.0000 1.000 0.70 0.22 FAKE_HELO_MAIL_COM
0.012 0.0185 0.0002 0.990 0.58 2.55 FAKE_HELO_EXCITE
0.014 0.0199 0.0024 0.892 0.57 2.43 FAKE_HELO_LYCOS
0.005 0.0082 0.0000 1.000 0.55 0.00 FAKE_HELO_MSN
0.003 0.0042 0.0000 1.000 0.53 0.00 FAKE_HELO_EMAIL_COM
0.001 0.0006 0.0006 0.532 0.50 0.00 FAKE_HELO_YAHOO_CA
nothing stellar there anymore, probably not worth a DNS lookup if you ask me.
I'd be in favour of just deleting them all.
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