$ ze-greyd -h
Usage : ze-greyd options
  Joe's ze-filter v2.0.0-090131
  Compiled on Feb  6 2009 21:44:45
        -h  : this message
        -u  : run ze-greyd as USER - default = smmsp
        -g  : run ze-greyd as GROUP - default = smmsp
        -s  : socket
              inet:2012@localhost
              local:/var/sock
        -a    client access control : "1.2.3.4,4.3.2.,11.22.33.44"
        -n  : ntuple definition : IP,FROM,TO
              IP   =  NONE | FULL | NET
              USER =  NONE | FULL | USER | HOST
              TO   =  NONE | FULL | USER | HOST
              DEFAULT = NET,HOST,FULL
        -t  : pending entries time constants : ta,tb,tc,td
              ta  = Min Pending delay - normal senders
              tb  = Max Pending delay - normal senders
              tc  = Min Pending delay - null senders
              td  = Max Pending delay - null senders
        -T  : valid entries time constants : tv,tw,tb
              tv  = valid entries lifetime
              tw  = whitelisted entries lifetime
              tb  = blacklisted entries lifetime
        -w  : working directory : default = /var/ze-filter/ze-greydb
        -t  : 
        -v  : increase log level
        -d  : debug mode - run in foreground