MX_IMPLICIT {
  expression = "MX_GOOD & MX_MISSING";
  score = -0.01;
}
VIRUS_FOUND {
  expression = "CLAM_VIRUS & !MAILCOW_WHITE";
  score = 2000;
}
SPF_FAIL_NO_DKIM {
  expression = "R_SPF_FAIL & R_DKIM_NA & !MAILCOW_WHITE";
  score = 10;
}
SOGO_CONTACT_EXCLUDE_FWD_HOST {
  expression = "WHITELISTED_FWD_HOST & ~SOGO_CONTACT";
}
SOGO_CONTACT_SPOOFED {
  expression = "(R_SPF_PERMFAIL | R_SPF_SOFTFAIL) & ~SOGO_CONTACT";
}