when procmailrc is wacky, what happens to the mail?

[Bill Lovett <blovett1@rcn.com>]

A couple times now I've edited my .procmailrc file, unwittingly screwed something up, and only discovered my mistake after a day or two goes by with not a peep out of otherwise high traffic lists. 

But what happens to a message when procmail gets confused by a broken recipe? Nothing shows up in in /var/spool/mail. And my .forward file goes a little something like this:

"|IFS='' && exec /usr/bin/procmail || exit 75 #username"

The only explanation I can think of is that procmail is hiding the messages in the same place the clothes dryer likes to hide some of my socks from time to time  ;)