On 19 Nov 2018, at 15:38, Joseph Brennan wrote:

Example: Obvi=9Do=9Dusly yo=9Du=9D ca=9Dn can cha=9Dnge=9D i=9Dt

In windows-1256, the presence of =9D between characters under decimal-128 is suspicious, regardless of Bitcoin. It seems like a simple rule but even rawbody does not check quoted-printable patterns. Plugin maybe? Has this
already been done and I've missed it?

Using the 'full' rule type checks the truly pristine message. This is of surprisingly limited utility. Note that if you looked for '=9D' using a 'full' rule it would match your message and most messages in this thread. It's theoretically possible to only examine a QP-encoded part for a QP encoding pattern, but I wouldn't use necessary sort of rule (unlimited multi-line) in production.

--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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