Provided by: policyd-weight_0.1.15.2-12.1_all bug


       policyd-weight.conf - policyd-weight configuration parameters


       Beta, Documentation incomplete


       policyd-weight  uses  a  perl(1)  style  configuration file which it reads on startup. The
       cache re-reads the configuration after $MAINTENANCE_LEVEL (default: 5) queries. If  -f  is
       not specified, it searches for configuration files on following locations:



       $CACHESIZE (default: 2000)
              Set the minimum size of the SPAM cache.

       $CACHEMAXSIZE (default: 4000)
              Set the maximum size of the SPAM cache.

              (default: 550 temporarily blocked because of previous errors)"

              Set the SMTP status code and a explanatory message for rejected mails due to cached

       $NTTL (default: 1)
              The client is penalized for that many retries.

       $NTIME (default: 30)
              The $NTTL counter will only be decremented if the  client  waits  at  least  $NTIME

       $POSCACHESIZE (default: 1000)
              Set the minimum size of the HAM cache.

       $POSCACHEMAXSIZE (default: 2000)
              Set the maximum size of the HAM cache.

       $PTTL (default: 60)
              After  that  many queries the HAM entry must succeed one run through the RBL checks

       $PTIME (default: 3h)
              after $PTIME in HAM Cache the client must pass  one  time  the  RBL  checks  again.
              Values  must  be  nonfractal.  Accepted  time-units: s(econds), m(inutes), h(ours),

       $TEMP_PTIME (default: 1d)
              The client must pass this time the RBL checks in order to be  listed  as  hard-HAM.
              After this time the client will pass immediately for PTTL within PTIME. Values must
              be non-fractal.  Accepted time-units: s(econds), m(inutes), h(ours), d(ays)


       $DEBUG (default: 0)
              Turn debugging on (1) or off (0)


       $DNS_RETRIES (default: 2)
              How many times a single DNS query may be repeated

       $DNS_RETRY_IVAL (default: 2)
              Retry a query without response after that many seconds

       $MAXDNSERR (default: 3)
              If that many queries fail, the mail is accepted with $MAXDNSERRMSG.
              In total DNS queries this means: $MAXDNSERR * $DNS_RETRIES

       $IGNORE_RFC1918_A (default: 0)
              If enabled (1) A records with RFC1918 addresses aren't treated as  bogus  addresses
              by policyd-weight and therefore bogus_mx_score isn't added.


       $MAINTENANCE_LEVEL (default: 5)
              After  that  many  policy  requests  the cache (and in daemon mode child processes)
              checks for configuration file changes

       $MAXIDLECACHE (default: 60)
              After that many seconds of being idle  the  cache  checks  for  configuration  file

       $PIDFILE (default: /var/run/
              Path and filename to store the master pid (daemon mode)

       $LOCKPATH (default: /tmp/.policyd-weight/)
              Directory  where  policyd-weight  stores  sockets  and  lock-files/directories. Its
              argument must contain a trailing slash.

       $SPATH (default: $LOCKPATH.'/polw.sock')
              Path and filename which the cache has to use for communication.

       $TCP_PORT (default: 12525)
              TCP port on which the policy server listens (daemon mode)

       $BIND_ADDRESS (default: '')
              IP Address on which policyd-weight binds. Currently either only one or all IPs  are
              supported. Specify 'all' if you want to listen on all IPs.

       $SOMAXCONN (default: 1024)
              Maximum  connections which policyd-weight accepts. This is set high enough to cover
              most scenarios.

       $USER (default: polw)
              Set the user under which policyd-weight runs

       $GROUP (default: $USER)
              Set the group under which policyd-weight runs


       $ADD_X_HEADER (default: 1)
              Insert a X-policyd-weight: header with evaluation messages.
              1 = on, 0 = off

       $LOG_BAD_RBL_ONLY (default: 1)
              Insert only RBL results in logging strings if the RBL  score  changes  the  overall
              score.  Thus RBLs with a GOOD SCORE of 0 don't appear in logging strings if the RBL
              returned no BAD hit.
              1 = on, 0 = off

       $MAXDNSBLMSG (default: 550 Your MTA is listed in too many DNSBLs)
              The message sent to the client  if  it  was  reject  due  to  $MAXDNSBLHITS  and/or

       $REJECTMSG  (default:  550  Mail  appeared  to  be  SPAM  or  forged.  Ask  your Mail/DNS-
       Adminisrator to correct HELO and DNS MX settings or to get removed from DNSBLs)

              Set the SMTP status code for rejected mails and a message why the action was taken


       $CHILDIDLE (default: 120)
              How many seconds a child may be idle before it dies (daemon mode)

       $MAX_PROC (default: 50)
              Process limit on how many processes policyd-weight will spawn (daemon mode)

       $MIN_PROC (default: 2)
              Minimum child processes which are kept alive in idle times (daemon mode)

       $PUDP (default: 0)
              Set persistent UDP connections used for DNS queries on (1) or off (0).


       Positive values indicate a bad (SPAM) score, negative values indicate a good (HAM) score.

       @bogus_mx_score (2.1, 0)
              If the sender domain has neither MX nor A records or these  records  resolve  to  a
              bogus  IP-Address  (for  instance private networks) then this check asigns the full
              score of bogus_mx_score. If there is no MX but an A record  of  the  sender  domain
              then it receives a penalty only if DNSBL-listed.

              Log Entries:

               The sender A and MX records are bogus or empty.

               The sender domain has an empty or bogus MX record and the client is DNSBL listed.

              Related RFCs:

              [1918] Address Allocation for Private Internets
              [2821] Simple Mail Transfer Protocol (Sect 3.6 and Sect 5)

       @client_ip_eq_helo_score (1.5, -1.25)
              Define  scores  for  the  match  of  the reverse record (hostname) against the HELO
              argument. Reverse lookups are done, if the  forward  lookups  failed  and  are  not

              Log Entries:

               The  Client's  PTR  matched  the  HELO  argument.

               Domain portions  of Client PTR and HELO argument matched.

               Client  PTRs  found   but  did  not  match  HELO argument.

       @helo_score (1.5, -2)
              Define  scores  for  the  match  of  the Client IP and its /24 subnet against the A
              records of HELO or MAIL FROM domain/host. It  also  holds  the  bad  score  for  MX

              Log Entries:

               Client IP matches the [IPv4] HELO.

               Client IP matches  the A record of the MAIL FROM sender domain/host.

               Client  IP  matches  the  A  record  of the HELO argument.

               The  IP and  the /24  subnet did  not  match A/MX records  of  HELO  and MAIL FROM
               arguments and their subdomains.

       @helo_from_mx_eq_ip_score (1.5, -3.1)
              Define scores for the match of Client IP against MX records. Positive (SPAM) values
              are  used  in case the MAIL FROM matches not the HELO argument AND the client seems
              to be dynamic AND the client is no MX for HELO and MAIL FROM arguments.  The  total
              DNSBL score is added to its bad score.

              Log Entries:

               Client IP  matches  the MAIL FROM domain/host MX record

               Client IP matches the HELO domain/host MX record

               Client  is  not  a  verified   HELO  and  doesn't  match A/MX records of MAIL FROM

               Client's subnet does  not  match A/MX records of the MAIL FROM argument

       $dnsbl_checks_only (default: 0)
              Disable HELO/RHSBL verifications and the like. Do only RBL checks.
              1 = on, 0 = off

       @dnsbl_score (default: see below)
              A list of RBLs to be checked. If you want that a host is not  being  evaluated  any
              further if it is listed on several lists or a very trustworthy list you can control
              a immediate REJECT with $MAXDNSBLHITS and/or $MAXDNSBLSCORE. A list of RBLs must be
              build as follows:

              @dnsbl_score = (
                  RBLHOST1,   HIT SCORE,  MISS SCORE,     LOG NAME,
                  RBLHOST2,   HIT SCORE,  MISS SCORE,     LOG NAME,
              The default is:

              @dnsbl_score = (
                  "",     3.25,   0,      "DYN_PBL_SPAMHAUS",
                  "", 4.35,   -1.5,   "SBL_XBL_SPAMHAUS",
                  "",       3.75,   -1.5,   "SPAMCOP",
                  "",  4.35,   0,      "IX_MANITU"

       @rhsbl_score (default: see below)
              Define  a  list  of RHSBL host which are queried for the sender domain. Results get
              additionally scores of 0.5 * DNSBL results and  @rhsbl_penalty_score.   A  list  of
              RHSBL hosts to be queried must be build as follows:

              @rhsbl_score = (
                  RHSBLHOST1,  HIT SCORE,  MISS SCORE,     LOG NAME,
                  RHSBLHOST2,  HIT SCORE,  MISS SCORE,     LOG NAME,
              The default is:

              @rhsbl_score = (
                  "",      4,      0,      "SURBL"

       @rhsbl_penalty_score (3.1, 0)
              This score will be added to each RHSBL hit if following criteria are met:

                  Sender has a random local-part (i.e. yztrzgb@example.tld)

               or MX records of sender domain are bogus

               or FROM matches not HELO

               or HELO is untrusted (Forward record matched, reverse record
                  did not match)

       $MAXDNSBLHITS (default: 2)
              If  the  client  is  listed  in  more  than  $MAXDNSBLHITS RBLs it will be rejected
              immediately with $MAXDNSBLMSG and without further evaluation. Results are cached by

       $MAXDNSBLSCORE (default: 8)
              If  the  BAD  SCOREs  of  @dnsbl_score  listed  RBLs  reach  a  level  greater than
              $MAXDNSBLSCORE the client  will  be  rejected  immediately  with  $MAXDNSBLMSG  and
              without further evaluation. Results are cached by default.

       $REJECTLEVEL (default: 1)
              Score results equal or greater than this level will be rejected with $REJECTMSG


       policyd-weight(8), Policyd-weight daemon
       perl(1), Practical Extraction and Report Language
       perlsyn(1), Perl syntax
       access(5), Postfix SMTP access control table


       GNU General Public License


       Robert Felber <>
       Autohaus Erich Kuttendreier
       81827 Munich, Germany

                                          Aug 25th, 2006                   policyd-weight.conf(5)