howto sign all mails

Hello,

again I'm playing with opendkim. Last days I tried to sign all mail
which passes my MTA no matter which sending domain is used.
I only like to 'label' the messages, that they had passed my MTA.

so I wrote this opendkim.conf:
Domain andreasschulze.de
Selector 2010
Keyfile /opt/opendkim/keys/2010._domainkey.andreasschulze.de.private
MTA ORIGINATING

but this signs only, if the sender is @andreasschulze.de
I does *not* sign other mails although they passed also (authenticated) via
this postfix smtp-server:

# from /etc/postfix/master.cf:
submission inet n - - - 5 smtpd
 -o milter_macro_daemon_name=ORIGINATING
 -o smtpd_milters=inet:localhost:2891

regards,
Andreas

-- 
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#
# Andreas Schulze
# https://andreasschulze.de
# 
# GnuPG Key-ID: A7DBA67F, https://andreasschulze.de/sca.asc
# GnuPG Fingerprint: 14C1 39A8 CE6D 6BE0 28C6 5652 03B5 6793 A7DB A67F
#
# $Id: .signature,v 1.3 2007-12-27 21:13:36 sca Exp $
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