[pmmail-list] Spam filter

[William B. Kendall]

I am using a spam filter which contains the following:

header.subject="$$$" | 
header.subject="!!" | 
header.subject="XXX" | 
header.subject="##"

If a subject contains only X or XX it does not treat the mail as
spam, but if it contains XXX it does, just as intended. However, if
the subject contains even one $ it treats the mail as spam. There
must be something about $s in filter strings which I don't know. Can
anyone tell me how this works?

Bill Kendall


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