Re: Matching on missing To field?

[Loren Wilton]

header __HDRS_MISSP ALL:raw =~ /^(?:Subject|From|To|Reply-To):\S/ism

That rule just says: look at all the raw header data and match if there's 
none
of Subject, From, To, Reply-To entries.
IE a really malformed message.

Hum. As I read it, that is "headers misspelled" (not "headers missing") and 
it is checking for any of the listed words at the start of a line, followed 
by a colon, and NOT followed by a space.

       Loren