[Mimedefang] character substitutions and obfuscation

[Dave Helton]

Greetings all,

  I have a block of code that _extensively_ checks the subject
lines for obfuscations and the like.  

I'd like to add the following to an existing rule,

        $subst1=236; ## substitutions in the word viagra
        $subst2=237; ## .. the grave accented i
                                                                                            	$subst3=242; ## grave and acute accented oh.
        $subst4=243;

        $subj_line =~ s/($subst1|$subst2)/i/g;
        $subj_line =~ s/($subst3|$subst4)/o/g;

Does anyone on the list have a code example for this, or a better way of
testing/substituting for these characters?  

Tnx
-- 
Dave Helton, KD0YU <dave at kd0yu dot com>
Real World Computing
Davenport, IA, US
563-386-4041
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