path: root/conf/metrics.conf

# Metrics settings
# Please don't modify this file as your changes might be overwritten with
# the next update.
#
# You can modify '$LOCAL_CONFDIR/rspamd.conf.local.override' to redefine
# parameters defined on the top level
#
# You can modify '$LOCAL_CONFDIR/rspamd.conf.local' to add
# parameters defined on the top level
#
# For specific modules or configuration you can also modify
# '$LOCAL_CONFDIR/local.d/file.conf' - to add your options or rewrite defaults
# '$LOCAL_CONFDIR/override.d/file.conf' - to override the defaults
#
# See https://rspamd.com/doc/tutorials/writing_rules.html for details

metric {
    name = "default";
    # If this param is set to non-zero
    # then a metric would accept all symbols
    # unknown_weight = 1.0

    actions {
      reject = 15;
      add_header = 6;
      greylist = 4;
    }

    group "excessqp" {
        max_score = 2.4;
    }
    group "excessb64" {
        max_score = 3.0;
    }
    group "header" {
        symbol "FORGED_SENDER" {
            weight = 0.30;
            description = "Sender is forged (different From: header and smtp MAIL FROM: addresses)";
        }
        symbol "R_MIXED_CHARSET" {
            weight = 5.0;
            description = "Mixed characters in a message";
            one_shot = true;
        }
        symbol "R_MIXED_CHARSET_URL" {
            weight = 7.0;
            description = "Mixed characters in a URL inside message";
            one_shot = true;
        }
        symbol "FORGED_RECIPIENTS" {
            weight = 2.0;
            description = "Recipients are not the same as RCPT TO: mail command";
        }
        symbol "FORGED_RECIPIENTS_MAILLIST" {
            weight = 0.0;
            description = "Recipients are not the same as RCPT TO: mail command, but a message from a maillist";
        }
        symbol "FORGED_SENDER_MAILLIST" {
            weight = 0.0;
            description = "Sender is not the same as MAIL FROM: envelope, but a message is from a maillist";
        }
        symbol "ONCE_RECEIVED" {
            weight = 0.1;
            description = "One received header in a message";
        }
        symbol "RDNS_NONE" {
            weight = 1.0;
            description = "Cannot resolve reverse DNS for sender's IP";
        }
        symbol "ONCE_RECEIVED_STRICT" {
            weight = 4.0;
            description = "One received header with 'bad' patterns inside";
        }
        symbol "MAILLIST" {
            weight = -0.2;
            description = "Message seems to be from maillist";
        }
    }

    group "subject" {
        max_score = 6.0;
    }

    group "mua" {
        symbol "FORGED_MUA_MAILLIST" {
            weight = 0.0;
            description = "Avoid false positives for FORGED_MUA_* in maillist";
        }
    }

    group "rbl" {
        symbol "DNSWL_BLOCKED" {
            weight = 0.0;
            description = "Resolver blocked due to excessive queries";
        }
        symbol "RCVD_IN_DNSWL" {
            weight = 0.0;
            description = "Unrecognised result from dnswl.org";
        }
        symbol "RCVD_IN_DNSWL_NONE" {
            weight = 0.0;
            description = "Sender listed at http://www.dnswl.org, low none";
        }
        symbol "RCVD_IN_DNSWL_LOW" {
            weight = 0.0;
            description = "Sender listed at http://www.dnswl.org, low trust";
        }
        symbol "RCVD_IN_DNSWL_MED" {
            weight = 0.0;
            description = "Sender listed at http://www.dnswl.org, medium trust";
        }
        symbol "RCVD_IN_DNSWL_HI" {
            weight = 0.0;
            description = "Sender listed at http://www.dnswl.org, high trust";
        }

        symbol "RBL_SPAMHAUS" {
            weight = 0.0;
            description = "Unrecognised result from Spamhaus zen";
        }
        symbol "RBL_SPAMHAUS_SBL" {
            weight = 2.0;
            description = "From address is listed in zen sbl";
        }
        symbol "RBL_SPAMHAUS_CSS" {
            weight = 2.0;
            description = "From address is listed in zen css";
        }
        symbol "RBL_SPAMHAUS_XBL" {
            weight = 4.0;
            description = "From address is listed in zen xbl";
        }
        symbol "RBL_SPAMHAUS_XBL_ANY" {
            weight = 4.0;
            description = "From or receive address is listed in zen xbl (any list)";
        }
        symbol "RBL_SPAMHAUS_PBL" {
            weight = 2.0;
            description = "From address is listed in zen pbl (ISP list)";
        }
        symbol "RBL_SPAMHAUS_DROP" {
            weight = 7.0;
            description = "From address is listed in zen drop bl";
        }
        symbol "RECEIVED_SPAMHAUS_XBL" {
            weight = 3.0;
            description = "Received address is listed in zen xbl";
            one_shot = true;
        }

        symbol "RBL_SENDERSCORE" {
            weight = 2.0;
            description = "From address is listed in senderscore.com BL";
        }
        symbol "RBL_ABUSECH" {
            weight = 1.0;
            description = "From address is listed in ABUSE.CH BL";
        }
        symbol "MAILSPIKE" {
            weight = 0.0;
            description = "Unrecognised result from Mailspike";
        }
        symbol "RWL_MAILSPIKE_NEUTRAL" {
            weight = 0.0;
            description = "Neutral result from Mailspike";
        }
        symbol "RBL_MAILSPIKE_WORST" {
            weight = 2.0;
            description = "From address is listed in RBL - worst possible reputation";
        }
        symbol "RBL_MAILSPIKE_VERYBAD" {
            weight = 1.5;
            description = "From address is listed in RBL - very bad reputation";
        }
        symbol "RBL_MAILSPIKE_BAD" {
            weight = 1.0;
            description = "From address is listed in RBL - bad reputation";
        }
        symbol "RWL_MAILSPIKE_POSSIBLE" {
            weight = 0.0;
            description = "From address is listed in RWL - possibly legit";
        }
        symbol "RWL_MAILSPIKE_GOOD" {
            weight = 0.0;
            description = "From address is listed in RWL - good reputation";
        }
        symbol "RWL_MAILSPIKE_VERYGOOD" {
            weight = 0.0;
            description = "From address is listed in RWL - very good reputation";
        }
        symbol "RWL_MAILSPIKE_EXCELLENT" {
            weight = 0.0;
            description = "From address is listed in RWL - excellent reputation";
        }

        symbol "RBL_SEM" {
            weight = 1.0;
            description = "Address is listed in Spameatingmonkey RBL";
        }

        symbol "RBL_SEM_IPV6" {
            weight = 1.0;
            description = "Address is listed in Spameatingmonkey RBL (ipv6)";
        }
        }

        group "bayes" {

        symbol "BAYES_SPAM" {
            weight = 4.0;
            description = "Message probably spam, probability: ";
        }
        symbol "BAYES_HAM" {
            weight = -3.0;
            description = "Message probably ham, probability: ";
        }
    }

    group "fuzzy" {
        symbol "FUZZY_UNKNOWN" {
            weight = 5.0;
            description = "Generic fuzzy hash match";
        }
        symbol "FUZZY_DENIED" {
            weight = 12.0;
            description = "Denied fuzzy hash";
        }
        symbol "FUZZY_PROB" {
            weight = 5.0;
            description = "Probable fuzzy hash";
        }
        symbol "FUZZY_WHITE" {
            weight = -2.1;
            description = "Whitelisted fuzzy hash";
        }
    }

    group "spf" {
        symbol "R_SPF_FAIL" {
            weight = 1.0;
            description = "SPF verification failed";
        }
        symbol "R_SPF_SOFTFAIL" {
            weight = 0.0;
            description = "SPF verification soft-failed";
        }
        symbol "R_SPF_NEUTRAL" {
            weight = 0.0;
            description = "SPF policy is neutral";
        }
        symbol "R_SPF_ALLOW" {
            weight = -0.2;
            description = "SPF verification allows sending";
        }
        symbol "R_SPF_DNSFAIL" {
            weight = 0.0;
            description = "SPF DNS failure";
        }
    }

    group "dkim" {
        symbol "R_DKIM_REJECT" {
            weight = 1.0;
            description = "DKIM verification failed";
            one_shot = true;
        }
        symbol "R_DKIM_TEMPFAIL" {
            weight = 0.0;
            description = "DKIM verification soft-failed";
        }
        symbol "R_DKIM_ALLOW" {
            weight = -0.2;
            description = "DKIM verification succeed";
            one_shot = true;
        }
    }

    group "surbl" {
        max_score = 12.5;

        symbol "SURBL_BLOCKED" {
            weight = 0.0;
            description = "SURBL: blocked by policy/overusage";
        }
        symbol "PH_SURBL_MULTI" {
            weight = 5.5;
            description = "SURBL: Phishing sites";
        }
        symbol "MW_SURBL_MULTI" {
            weight = 5.5;
            description = "SURBL: Malware sites";
        }
        symbol "ABUSE_SURBL" {
            weight = 5.5;
            description = "SURBL: ABUSE";
        }
        symbol "CRACKED_SURBL" {
            weight = 4.0;
            description = "SURBL: cracked site";
        }
        symbol "RAMBLER_URIBL" {
            weight = 4.5;
            description = "rambler.ru uribl";
        }

        symbol "SEM_URIBL_UNKNOWN" {
            weight = 0.0;
            description = "Spameatingmonkey uribl: unknown result";
        }
        symbol "SEM_URIBL" {
            weight = 3.5;
            description = "Spameatingmonkey uribl";
        }

        symbol "SEM_URIBL_FRESH15_UNKNOWN" {
            weight = 0.0;
            description = "Spameatingmonkey Fresh15 uribl: unknown result";
        }
        symbol "SEM_URIBL_FRESH15" {
            weight = 3.0;
            description = "Spameatingmonkey uribl. Domains registered in the last 15 days (.AERO,.BIZ,.COM,.INFO,.NAME,.NET,.PRO,.SK,.TEL,.US)";
        }

        symbol "DBL" {
            weight = 0.0;
            description = "DBL unknown result";
        }
        symbol "DBL_SPAM" {
            weight = 6.5;
            description = "DBL uribl spam";
        }
        symbol "DBL_PHISH" {
            weight = 6.5;
            description = "DBL uribl phishing";
        }
        symbol "DBL_MALWARE" {
            weight = 6.5;
            description = "DBL uribl malware";
        }
        symbol "DBL_BOTNET" {
            weight = 5.5;
            description = "DBL uribl botnet C&C domain";
        }
        symbol "DBL_ABUSE" {
            weight = 6.5;
            description = "DBL uribl abused legit spam";
        }
        symbol "DBL_ABUSE_REDIR" {
            weight = 1.5;
            description = "DBL uribl abused spammed redirector domain";
        }
        symbol "DBL_ABUSE_PHISH" {
            weight = 7.5;
            description = "DBL uribl abused legit phish";
        }
        symbol "DBL_ABUSE_MALWARE" {
            weight = 7.5;
            description = "DBL uribl abused legit malware";
        }
        symbol "DBL_ABUSE_BOTNET" {
            weight = 5.5;
            description = "DBL uribl abused legit botnet C&C";
        }
        symbol "DBL_PROHIBIT" {
            weight = 0.00000;
            description = "DBL uribl IP queries prohibited!";
        }
        symbol "URIBL_MULTI" {
            weight = 0.0;
            description = "uribl.com: unrecognised result";
        }
        symbol "URIBL_BLOCKED" {
            weight = 0.0;
            description = "uribl.com: query refused";
        }
        symbol "URIBL_BLACK" {
            weight = 7.5;
            description = "uribl.com black url";
        }
        symbol "URIBL_RED" {
            weight = 3.5;
            description = "uribl.com red url";
        }
        symbol "URIBL_GREY" {
            weight = 1.5;
            description = "uribl.com grey url";
            one_shot = true;
        }
        symbol "RAMBLER_EMAILBL" {
            weight = 9.5;
            description = "rambler.ru emailbl";
            one_shot = true;
        }

        symbol "SBL_URIBL" {
            weight = 0.0;
            description = "SBL URIBL: Filtered result";
        }
        symbol "URIBL_SBL" {
            weight = 6.5;
            description = "Spamhaus SBL URIBL";
        }
        symbol "URIBL_SBL_CSS" {
            weight = 6.5;
            description = "Spamhaus SBL CSS URIBL";
        }
        symbol "RBL_SARBL_BAD" {
            weight = 2.5;
            description = "A domain listed in the mail is blacklisted in SARBL";
       }
    }

    group "phishing" {
        symbol "PHISHING" {
            weight = 4.0;
            description = "Phished URL";
            one_shot = true;
        }
        symbol "PHISHED_OPENPHISH" {
            weight = 7.0;
            description = "Phished URL found in openphish.com";
        }
        symbol "PHISHED_PHISHTANK" {
            weight = 7.0;
            description = "Phished URL found in phishtank.com";
        }
    }

    group "hfilter" {
        symbol "HFILTER_HELO_BAREIP" {
            weight = 3.00;
            description = "Helo host is bare ip";
        }
        symbol "HFILTER_HELO_BADIP" {
            weight = 4.50;
            description = "Helo host is very bad ip";
        }
        symbol "HFILTER_HELO_1" {
            weight = 0.5;
            description = "Helo host checks (very low)";
        }
        symbol "HFILTER_HELO_2" {
            weight = 1.00;
            description = "Helo host checks (low)";
        }
        symbol "HFILTER_HELO_3" {
            weight = 2.00;
            description = "Helo host checks (medium)";
        }
        symbol "HFILTER_HELO_4" {
            weight = 2.50;
            description = "Helo host checks (hard)";
        }
        symbol "HFILTER_HELO_5" {
            weight = 3.00;
            description = "Helo host checks (very hard)";
        }
        symbol "HFILTER_HOSTNAME_1" {
            weight = 0.5;
            description = "Hostname checks (very low)";
        }
        symbol "HFILTER_HOSTNAME_2" {
            weight = 1.00;
            description = "Hostname checks (low)";
        }
        symbol "HFILTER_HOSTNAME_3" {
            weight = 2.00;
            description = "Hostname checks (medium)";
        }
        symbol "HFILTER_HOSTNAME_4" {
            weight = 2.50;
            description = "Hostname checks (hard)";
        }
        symbol "HFILTER_HOSTNAME_5" {
            weight = 3.00;
            description = "Hostname checks (very hard)";
        }
        symbol "HFILTER_HELO_NORESOLVE_MX" {
            weight = 0.20;
            description = "MX found in Helo and no resolve";
        }
        symbol "HFILTER_HELO_NORES_A_OR_MX" {
            weight = 0.3;
            description = "Helo no resolve to A or MX";
        }
        symbol "HFILTER_HELO_IP_A" {
            weight = 1.00;
            description = "Helo A IP != hostname IP";
        }
        symbol "HFILTER_HELO_NOT_FQDN" {
            weight = 2.00;
            description = "Helo not FQDN";
        }
        symbol "HFILTER_FROMHOST_NORESOLVE_MX" {
            weight = 0.5;
            description = "MX found in FROM host and no resolve";
        }
        symbol "HFILTER_FROMHOST_NORES_A_OR_MX" {
            weight = 1.50;
            description = "FROM host no resolve to A or MX";
        }
        symbol "HFILTER_FROMHOST_NOT_FQDN" {
            weight = 3.00;
            description = "FROM host not FQDN";
        }
        symbol "HFILTER_FROM_BOUNCE" {
            weight = 0.00;
            description = "Bounce message";
        }
    /*
        symbol {
            weight = 0.50;
            name = "HFILTER_MID_NORESOLVE_MX";
            description = "MX found in Message-id host and no resolve";
        }
        symbol {
            weight = 0.50;
            name = "HFILTER_MID_NORES_A_OR_MX";
            description = "Message-id host no resolve to A or MX";
        }
        symbol {
            weight = 0.50;
            name = "HFILTER_MID_NOT_FQDN";
            description = "Message-id host not FQDN";
        }
    */
        symbol "HFILTER_HOSTNAME_UNKNOWN" {
            weight = 2.50;
            description = "Unknown hostname (no PTR or no resolve PTR to hostname)";
        }
        symbol "HFILTER_RCPT_BOUNCEMOREONE" {
            weight = 1.50;
            description = "Message from bounce and over 1 recepient";
        }
        symbol "HFILTER_URL_ONLY" {
            weight = 2.20;
            description = "URL only in body";
        }
        symbol "HFILTER_URL_ONELINE" {
            weight = 2.50;
            description = "One line URL and text in body";
        }
    }

    group "dmarc" {

        symbol "DMARC_POLICY_ALLOW" {
            weight = -0.5;
            description = "DMARC permit policy";
        }
        symbol "DMARC_POLICY_ALLOW_WITH_FAILURES" {
            weight = -0.5;
            description = "DMARC permit policy with DKIM/SPF failure";
        }
        symbol "DMARC_POLICY_REJECT" {
            weight = 2.0;
            description = "DMARC reject policy";
        }
        symbol "DMARC_POLICY_QUARANTINE" {
            weight = 1.5;
            description = "DMARC quarantine policy";
        }
        symbol "DMARC_POLICY_SOFTFAIL" {
            weight = 0.1;
            description = "DMARC failed";
        }
    }
    group "mime_types" {
        symbol "MIME_GOOD" {
            weight = -0.1;
            description = "Known content-type";
            one_shot = true;
        }
        symbol "MIME_BAD" {
            weight = 1.0;
            description = "Known bad content-type";
            one_shot = true;
        }
        symbol "MIME_UNKNOWN" {
            weight = 0.1;
            description = "Missing or unknown content-type";
            one_shot = true;
        }
        symbol "MIME_BAD_ATTACHMENT" {
            weight = 4.0;
            description = "Invalid attachement mime type";
            one_shot = true;
        }
        symbol "MIME_ENCRYPTED_ARCHIVE" {
            weight = 2.0;
            description = "Encrypted archive in a message";
            one_shot = true;
        }
        symbol "MIME_ARCHIVE_IN_ARCHIVE" {
            weight = 5.0;
            description = "Archive within another archive";
            one_shot = true;
        }
        symbol "MIME_DOUBLE_BAD_EXTENSION" {
            weight = 3.0; # This rule has dynamic weight up to 4.0
            description = "Bad extension cloaking";
            one_shot = true;
        }
        symbol "MIME_BAD_EXTENSION" {
            weight = 2.0; # This rule has dynamic weight up to 4.0
            description = "Bad extension";
            one_shot = true;
        }
    }

    .include(try=true; priority=1; duplicate=merge) "$LOCAL_CONFDIR/local.d/metrics.conf"
    .include(try=true; priority=10) "$LOCAL_CONFDIR/override.d/metrics.conf"
}