SpamAssassin自定义规则参考

#Lowered score from 3.2 for testing 9/19
 
header          ENA_SUBJ_ONLY_SPACES    Subject =~ /^\s\s+$/
describe        ENA_SUBJ_ONLY_SPACES    Subject is only spaces commonly used by spammers to get around subject checks
score           ENA_SUBJ_ONLY_SPACES    0.2
#Lowered score from 2.2 for testing 9/19
 
header          ENA_SUBJ_ONLY_FWD       Subject =~ /(^Fw:\s+$|^Fw\s+$|^Fwd:\s+$|^Fwd\s+$|^Fwd: \(\d\)$|^Fwd: \[\d\]$)/i
describe        ENA_SUBJ_ONLY_FWD       Subject is only "Fwd:"
score           ENA_SUBJ_ONLY_FWD       2.2
 
header          ENA_SUBJ_ONLY_RE        Subject =~ /(^Re:\s+$|^Re\s+$|^Re: \(\d\)$|^Re: \[\d\]$)/i
describe        ENA_SUBJ_ONLY_RE        Subject is only "Re:"
score           ENA_SUBJ_ONLY_RE        2.2
 
header          ENA_SUBJ_LONG_WORD      Subject =~ /\b[^[:space:][:punct:]]{30}/
describe        ENA_SUBJ_LONG_WORD      Subject has a very long word
score           ENA_SUBJ_LONG_WORD      2.2
 
header          ENA_SUBJ_ODD_CASE       Subject =~ /(?:[[:lower:]][[:upper:]].{0,15}){3}/
describe        ENA_SUBJ_ODD_CASE       Subject has odd case
score           ENA_SUBJ_ODD_CASE       3.2