# If you use Pine as your mailer then this recipe will help you to
# avoid posting your response to a message that was privately mailed
# to you by a user of Tin, TRN, NN, and other newsreaders that
# leave the Newsgroups header in private mail messages.
:0 fhw
* ! ^Message-Id:.*Pine
*   ^Newsgroups:
| formail -R Newsgroups: Originated-In-Newsgroups: