scripting problems with qmail-inject and qmail-local

[David Cunningham]

I'm trying to write a script that will watch for incoming mail and send out
a response when one arrives.  I've tried to spawn the script from .qmail but
it appears that qmail-inject refuses to accept input from my script when the
script is ran by qmail-local.  Any suggestions for how to write a script to
get around this problem?