Page History

...

A few people convert "all-or-nothing" SpamAssassin rules (most people mark these by giving them a score of "1000100") to procmail rules, to help reduce CPU time.

...

In the example
http://spamassassin.org/dist/procmailrc.example

I don't understand the condition in the stanza starting with

# Work around procmail bug: any output on stderr will cause the "F" in "From"
# to be dropped.  This will re-add it.
:0
* ^^rom[ ]

. Shouldn't there be only a single The double-caret (^) there to find the beginning-of-line ?
– DavidCary No – check the man page for procmailrc.^^) anchors the expression at the very start of the search area (it's a procmail extension to the egrep syntax). The very beginning of the envelope *should* start with "From" followed by a space (later in the email there's often another "From" followed by a colon).

Once everyone has installed the 3.23pre version of procmail (or an even more recent version), we should no longer need the work-around: http://q.queso.com/archives/000927

(Thanks Martin ! – DavidCary)