The original message was received at Tue, 28 Jan 2025 10:51:15 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeFJ1C1JfcUt5dwYGHjVjKwFwP0sTCAwvHBhK) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeFJ4DlxVcUt5JgYGHjVjKwFzbksVVAwvHBhK) (reason: 551 5.1.1 recipient is not exist) (reason: 550 5.1.1 sorry, no mailbox here by that name. #5.5.1) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550-5.7.1 [83.138.65.30 18] Gmail has detected that this message is likely) (reason: 550 Mail content denied [Nu9f9OZKLqws/agtt3S/Xlz7+mNNhSTK3+X4R4wfOxrhnxjz9mj0s+c= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 5.4.1 Recipient address rejected: Access denied. [SG1PEPF000082E1.apcprd02.prod.outlook.com 2025-01-28T09:58:15.714Z 08DD3E82D91AB6FA]) (reason: 550 Host unknown) ----- Transcript of session follows ----- ... while talking to bii-astar-edu-sg01c.mail.protection.outlook.com.: >>> DATA ... Deferred: Connection reset by smtp.bii.a-star.edu.sg. ... while talking to aspmx.l.google.com.: >>> DATA ... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... while talking to smtp.google.com.: >>> DATA ... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... while talking to hzmx01.mxmail.netease.com.: >>> DATA >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [DU2PEPF00028D06.eurprd03.prod.outlook.com 2025-01-28T09:55:38.552Z 08DD3F7A29C9997E] ... while talking to hzmx01.mxmail.netease.com.: >>> DATA >> DATA ... User unknown >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [AMS1EPF0000004E.eurprd04.prod.outlook.com 2025-01-28T09:55:58.784Z 08DD3E5F5F1B8C2E] ... while talking to mail-pt.securemail.pro.: >>> DATA sorry, no mailbox here by that name. #5.5.1 550 5.1.1 ... User unknown >> DATA >> DATA >> DATA >> DATA >> DATA >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [HK2PEPF00006FAE.apcprd02.prod.outlook.com 2025-01-28T09:58:10.745Z 08DD3E2898F8C7EC] ... while talking to polyu-edu-hk.mail.protection.outlook.com.: >>> DATA ... User unknown ... Deferred: 421 mail11.hmail.sg closing connection ... while talking to smu-edu-sg.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [HK3PEPF0000021C.apcprd03.prod.outlook.com 2025-01-28T09:58:57.602Z 08DD3E52F83A7319] ... while talking to aspmx.l.google.com.: >>> DATA >> DATA >> DATA >> DATA >> DATA ... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... while talking to taisun-com-tw.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [HK3PEPF00000221.apcprd03.prod.outlook.com 2025-01-28T09:59:28.127Z 08DD3E345176C245] ... while talking to mail.xjtu.edu.cn.: >>> DATA ... Deferred: 450 Requested action not taken: KgGowAD3VEKHqphn3YJUAQ--.9479S3, please try again 550 5.1.2 ... Host unknown (Name server: yfg-tech.com.tw: host not found) ... Deferred: Connection refused by ztpc.cn.