Using procmail ebuild 3.22, procmail will not deliver to /var/spool/mail because
of the patch to authenticate.c. Removing the sed line fixes this. Bug or Feature
? could be done more cleanly ?
*** Bug 1994 has been marked as a duplicate of this bug. ***
Added mbox use item to procmail-3.22-r1. Using this use item disables the
changing of procmail to use maildir.