Quoting Sarah Phibbs (sarah(_dot_)phibbs(_at_)oum(_dot_)ox(_dot_)ac(_dot_)uk):
:0
/dev/nul
Do you really have a /dev/nul, or was this a typo?
It might be easier to use procmail by itself, along the lines of:
:0h
*!X-Loop: you(_at_)your(_dot_)site
| (formail -r -t -I"From: you(_at_)your(_dot_)site" -I"X-Loop:
you(_at_)your(_dot_)site";
cat some.explanatory.message.txt) | $SENDMAIL -t
# throw away any looped messages
/dev/null
--
Michael Stone, Sysadmin, ITRI
mstone(_at_)itri(_dot_)loyola(_dot_)edu
PGP: finger, or email with "Subject: get pgp key"