Boj se spamem bohuzel neni vec, kterou clovek vyresi jednou a provzdy. Cas od casu je potreba upravit pravidla a dalsi drobnosti. Co dle mych zkusenosti funguje:
* DNS blocklisty
* pyzor
* bayes filtrovani, hlavne pravidelne plnit spamem/hamem
* spam nemazat, presouvat do slozek a obcas mrknout co tam chodi, podle toho upravovat pravidla:
# missing RDNS
score RDNS_NONE 2.13
# fucking hadice a baterky!
body LOCAL_CZECH_SPAM /00bcz14\.jpg/
score LOCAL_CZECH_SPAM 5.13
describe LOCAL_CZECH_SPAM Match something from czech spam mails
#score PYZOR_CHECK 3.13
score PYZOR_CHECK 4.13
score URIBL_DBL_SPAM 3.5
# spammy domains
header SPAMMY_TLD_IN_RCVD Received =~ /(\.net\.ae|\.net\.id|\.ro|\.ru|\.co\.jp|\.co\.ke|\.AC\.ZA|\.co\.in|\.com\.vn|\.vn|\.cc|\.cu\.ua|\.com\.br|\.gr|\.hr|\.dk|\.win|\.bid|\.tw|\.br|\.pk|\.top|\.club|\.date|\.stream|\.xyz|biz\.ua|co\.ua)\s/i
score SPAMMY_TLD_IN_RCVD 2.13
describe SPAMMY_TLD_IN_RCVD Spammy TLD used in Received line
header SPAMMY_TLD_IN_FROM From =~ /(\.net\.ae|\.net\.id|\.ro|\.ru|\.co\.jp|\.co\.ke|\.AC\.ZA|\.co\.in|\.com\.vn|\.vn|\.cc|\.cu\.ua|\.com\.br|\.gr|\.hr|\.dk|\.win|\.bid|\.tw|\.br|\.pk|\.top|\.club|\.date|\.stream|\.xyz|biz\.ua|co\.ua)>$/i
score SPAMMY_TLD_IN_FROM 2.13
describe SPAMMY_TLD_IN_FROM Spammy TLD used in From line