# Greylisting is an SMTP-time tactic: defer, see if the sender retries. We scan
# mail that has ALREADY been delivered and fetched over IMAP, so there is nothing
# to defer — the symbol fired on 62.6% of a real-mail sample and only added noise.
# It belongs at the M6 edge (§C.7), not in the second-pass filter.
enabled = false;