Listproc operability using Exim

Hello,

Anyone using Exim also using Listproc? Exim is bailing when attempting
to execute the alias pipe to /usr/local/server/catmail, which is not
executable by anyone other than root or server. This could be a
permissions problem since I've built Exim to run without priv's. Or, it
could be that I need to add a new transport and Director?

Anyone solve this one already and willing to share solutions? Am I on the
right path here, or did I miss something in the dox?

TIA,

-Mike
plante@???