Installation instruction for pfixtools

1)  Install dependencies; you will need at least the following packages:
        gperf, libbz2-dev, libsrs2-dev, libunbound-dev, pkg-config
    Install tokyocabinet: http://tokyocabinet.sourceforge.net/
    Install libev: http://software.schmorp.de/pkg/libev.html

2)  Compile:
    $ make
    $ sudo make install

3)  Prepare the configuration in /etc/pfixtools
      - postlicyd.conf, read postlicyd.example.conf to learn more
      - postlicyd-rsyncrbl.conf, read postlicyd-rsyncrbl.example.conf to learn more
      - additional files required by the configuration, such as client_whitelist
        postgrey2postlicyd can be used to migrate from an existing
        postgrey clients whitelist
    If you are using RBLs, you should add a crontab entry for postlicyd-rsyncrbl

4)  Create the spool:
    # mkdir -p /var/spool/pfixtools/
    # chown nobody:nogroup /var/spool/pfixtools/

5)  Policy daemon startup script: /etc/init.d/postlicyd
    Use your distribution's favorite way to start/stop services.
    Start the policy daemon:
    # /etc/init.d/postlicyd start

6) Tell postfix to use postlicyd as a policy daemon and reload postfix