 includes a new, redesigned clamav-milter. The most notable
    difference is that the internal mode has been dropped and now a working
    clamd companion is required. The second important difference is that now
    the milter has got its own configuration and log files.
 includes a new, redesigned clamav-milter. The most notable
    difference is that the internal mode has been dropped and now a working
    clamd companion is required. The second important difference is that now
    the milter has got its own configuration and log files. 
    
./configure
    --enable-milter and make as usual. In order to use the 
    '-enable-milter' option with 'configure', your system MUST have the milter 
    library installed.  If you use the '-enable-milter' option without the 
    library being installed, you will most likely see output like this during 
    'configure':
    
        checking for libiconv_open in -liconv... no
        checking for iconv... yes
        checking whether in_port_t is defined... yes
        checking for in_addr_t definition... yes
        checking for mi_stop in -lmilter... no
        checking for library containing strlcpy... no
        checking for mi_stop in -lmilter... no
        configure: error: Cannot find libmilter
    At which point the 'configure' script will stop processing.