ตัวอย่างหนังสือ

The following From address failed: opsvlcloud@gmail.com : MAIL FROM command failed,5.7.57 Client not authenticated to send mail. [SI2P153CA0007.APCP153.PROD.OUTLOOK.COM 2026-06-13T00:23:51.666Z 08DEC82D8EAB2178],530,SMTP server error: MAIL FROM command failed Detail: 5.7.57 Client not authenticated to send mail. [SI2P153CA0007.APCP153.PROD.OUTLOOK.COM 2026-06-13T00:23:51.666Z 08DEC82D8EAB2178] SMTP code: 530
2026-06-13 00:23:53 CLIENT -> SERVER: QUIT
2026-06-13 00:23:53 SERVER -> CLIENT:
2026-06-13 00:23:53 SMTP ERROR: QUIT command failed: