On 02/23, Mark Martinec wrote: > reject_unknown_sender_domain > > Reject the request when Postfix is not final destination for the sender > address, and the MAIL FROM address has no DNS A or MX record, or when > it has a malformed MX record such as a record with a zero-length MX > hostname (Postfix version 2.3 and later).
Ah, no MX *and* no A record. That's different, and makes more sense. Also makes Henry's answer of NO_DNS_FOR_FROM correct. RuleQA results for that test: http://ruleqa.spamassassin.org/?daterev=20110219&rule=NO_DNS_FOR_FROM MSECS SPAM% HAM% S/O RANK SCORE NAME WHO/AGE 0 1.8012 0.3061 0.855 0.62 0.00 NO_DNS_FOR_FROM It hits 1.8% of spam and 0.3% of non-spam. /var/lib/spamassassin/3.003001/updates_spamassassin_org$ grep NO_DNS_FOR_FROM 50_scores.cf score NO_DNS_FOR_FROM 0 0.379 0 0.001 # n=0 n=2 Looks like it's enabled? -- "Am I a man who dreamed I was a butterfly, or am I a butterfly who is dreaming I am a man?" - Chuang Tsu, ~350 BC http://www.ChaosReigns.com
