This is the mail system at host notify.kompas.com. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system : host kompas-com.mail.protection.outlook.com[52.101.124.117] said: 550 5.1.20 SMTP; Multiple From addresses are not allowed without a Sender address [TYZPR04MB7591.apcprd04.prod.outlook.com 2025-05-04T13:26:37.437Z 08DD89694E4264C6] [TYCPR01CA0003.jpnprd01.prod.outlook.com 2025-05-04T13:26:37.437Z 08DD89AB4FEC46D7] [TY2PEPF0000AB83.apcprd03.prod.outlook.com 2025-05-04T13:26:37.438Z 08DD8720A725026F] (in reply to end of DATA command)