Tips-Spamhaus

 SPAM などの ブラックリストで有名な Spamhaus の Tips

sendmail に登録して使う

MC ファイルに
FEATURE(dnsbl,`zen.spamhaus.org', `"550 rejected, see relays zen.spamhaus.org"')
## FEATURE(dnsbl,`sbl.spamhaus.org', `"550 rejected, see relays sbl.spamhaus.org"')
## FEATURE(dnsbl,`pbl.spamhaus.org', `"550 rejected, see relays pbl.spamhaus.org"')
## FEATURE(dnsbl,`xbl.spamhaus.org', `"550 rejected, see relays xbl.spamhaus.org"')
を追加

dig +short 10.100.228.210.zen.spamhaus.org
##dig +short 10.100.228.210.xbl.spamhaus.org
##dig +short 10.100.228.210.sbl.spamhaus.org
##dig +short 10.100.228.210.pbl.spamhaus.org

Apendix

https://www.spamhaus.org/faq/section/DNSBL%20Usage#366

https://www.spamhaus.org/organization/dnsblusage/