/* Copyright (c) Wolfgang Breyha 2005-2008
 * Vienna University Computer Center
 * wbreyha@gmx.net
 * License: same as current exim distribution
 * See the file NOTICE for conditions of use and distribution.
 */ 

/* This patch is based on code from Tom Kistners exiscan (ACL integration) and
 * the DCC local_scan patch from Christopher Bodenstein */

INSTALLATION:
------------
Apply the patch and add
EXPERIMENTAL_DCC=yes
to your Makefile. (Re-)build/install exim. exim -d should show EXPERIMENTAL_DCC under "Support for".

CONFIGURATION:
-------------
In the main section of exim.cf add at least
dccifd_address = /usr/local/dcc/var/dccifd
or
dccifd_address = <ip> <port>

In the DATA ACL you can use the new condition
        dcc = *

After that "dcc_header" contains the X-DCC-Header.

*** WARNING: return codes changed from previous releases!

Returnvalues are:
fail for overall "R", "G" from dccifd
defer for overall "T" from dccifd
accept for overall "A", "S" from dccifd

dcc = */defer_ok works as for spamd.

dcc_result contains the overall result from DCC answer

usually you'll use
defer   !dcc = *
to greylist with DCC.

if
dcc_direct_add_header = true
is set, then the dcc header will be added "in deep" and if the spool file was already written it gets removed. This forces exim to write it again if needed. This helps to get the DCC Header through to eg. SpamAssassin.

if you want to pass even more headers in the middle of the DATA stage you can use
$acl_m_dcc_add_header
to add information from eg. ClamAV.

Be carefull. Header syntax is not checked and added "as is".