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BAD_ENC_HEADER SpamAssassin email spam test explained.

Virus News

A new generation dailers that initiate expensive international calls have now started targeting smartphones.
I would not be surprised to see iphone virus and andriod viruses as new categories with much growth in the near future ..
Writing on the CA security blog, Akhil Menon said it was seeing a "an increasing trend of trojan diallers". Mr Menon profiled one such virus, called Swapi.B, which sends premium SMS messages.
Read more on BBC

AntiVirusHelpTool.com > SpamAssassing Spam Tests > Header > Why is email classified as BAD_ENC_HEADER?

BAD_ENC_HEADER definition

Test name	BAD_ENC_HEADER
Test description/trigger	Message has bad MIME encoding in the header
SpamAssassin versions	3.2.x,3.1.x
Locale (if any)
Default Spam score	3.499
Default Spam score (with bayes)	1.947
Default Spam score (net)	2.87
Default Spam score (with bayes+net)	1.81

This test can contribute between 34.99% and 69.98% of the required spam score on a typical spam assassin installation.

Header example

X-Virus-Scanned: clamav-milter 
X-Spam-Flag: NO
X-Spam-Score: -7.45
X-Spam-Level: ***
X-Spam-Status: No, score=-7.45 tagged_above=0 required=5.0
 tests=[BAD_ENC_HEADER=3.499, HTML_NONELEMENT_70_80=0.449,
        USER_IN_DEF_WHITELIST=-15, FB_DOUBLE_0WORDS=3.599]