Postfix/DMARC ログ集計レポート 2025-10-30 08:18

Postfix 拒否ログ上位理由

450 4.7.1 Client host rejected: cannot find your reverse hostname, [196.251.73.43]: 1
450 4.7.1 Client host rejected: cannot find your reverse hostname, [196.251.92.61]: 1
450 4.7.1 Client host rejected: cannot find your reverse hostname, [196.251.86.194]: 1
450 4.7.1 Client host rejected: cannot find your reverse hostname, [178.16.52.30]: 1
450 4.7.1 Client host rejected: cannot find your reverse hostname, [144.31.194.177]: 1
554 5.7.1 Service unavailable: 1