[Exim] Virtual Domain .forward files

OK - I'm stumped on this one.

I'm trying to set up virtual .forward files. The virtual domains are as
follows:

/vhome/$domain/home/$local_part/.forward

The home directory is also in the virtual passwd files in standards
passwd format

/etc.vmail/passwd.$domain

Here's what I have but it doesn't work. Anyone have a clue?

userforward:
driver = forwardfile
file = ${extract{5} {:} {${lookup {$local_part} lsearch
{/etc/vmail/passwd.$domain} {$value}}}}.forward
file_directory = /
no_verify
no_expn
no_check_local_user
check_ancestor
filter
skip_syntax_errors
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply