Postfix/DMARC ログ集計レポート 2026-06-19 20:00

Postfix 拒否ログ 上位理由

• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [43.228.157.123]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [141.98.9.89]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [178.16.52.61]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [163.43.70.128]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [133.242.227.110]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [91.92.240.224]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [91.92.243.134]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [59.106.220.50]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [91.92.242.60]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [27.102.115.141]: 1
• 450 4.7.1 Client host rejected: cannot find your reverse hostname, [59.106.208.216]: 1

DMARC 失敗送信元 上位

1. 183.181.88.16：1