[Exim] problems with using procmail for local delivery

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hello,
i'm still at configuring exim to use procmail for local mail delivery.
so, the server is server.mejo.net, and mail to jonas@??? for
example should go through server.mejo.net:/home/jonas/.procmailrc.

i have in exim.conf:

local_delivery:
driver = appendfile
group = mail
mode = 0660
mode_fail_narrower = false
envelope_to_add = true
return_path_add = true
directory = ${home}/Maildir
maildir_format = true
prefix = ""

# This transport is used for procmail

procmail_pipe:
driver = pipe
command = "/usr/bin/procmail"
return_path_add
delivery_date_add
envelope_to_add
# check_string = "From "
# escape_string = ">From "
suffix = ""

real_local:
prefix = real-
driver = localuser
transport = local_delivery

userforward:
driver = forwardfile
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
no_verify
check_ancestor
check_local_user
file = .forward
modemask = 002
filter

# This director runs procmail for users who have a .procmailrc file

procmail:
driver = localuser
transport = procmail_pipe
require_files = ${local_part}:+${home}:+${home}/.procmailrc:+/usr/bin/procmail
no_verify

(hope to paste the important parts)

but if i send mail from another machine (jonas.mejo.net, 192.168.3.12),
i get this error:
2003-06-15 16:38:33 19RYeP-0006R3-00 <= jonas@??? H=jonas.mejo.net [192.168.3.12] P=esmtp S=777 id=20030615144355.GC4026@???
2003-06-15 16:38:34 19RYeP-0006R3-00 == /usr/local/bin/procmail <jonas@???> T=address_file defer (13): Permission denied: creating lock file hitching post /usr/local/bin/procmail.lock.server.mejo.net.3eec84ea.000060a8 (euid=1000 egid=1000)

i think some parts of this log are quite strange: why tries exim to use
/usr/local/bin/procmail... stuff instead of /usr/bin/procmail like
configured? and how can i fix this problem?

thanks for any help

bye
mejo

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