Configure exim to use clapf
Prerequisites
You must use SMTP delivery to clapf (ie. server_mode=1 in clapf.conf)
Configuring Exim
1. Edit /etc/exim/exim.conf
i) specify in the 'Main configuration settings' section that exim should listen on 127.0.0.1:10026/tcp, too:
local_interfaces = 0.0.0.0.25 : 127.0.0.1.10026
ii) create a new router below the 'dnslookup' definition:
clapf: driver = manualroute condition = "${if eq {$interface_port}{10026} {0}{1}}" transport = clapf route_list = "* localhost byname" self = send no_verify
iii) create a new transport called 'clapf':
clapf: driver = smtp port = 10025 allow_localhost
2. Issue the kill -HUP <exim PID> command
For more details, please see http://www.ijs.si/software/amavisd/README.exim_v4.txt