The original message was received at Tue, 28 Jan 2025 11:46:59 +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/ABFOBSMCdVMiCw5bcUl3IQYGHjVudwZ1PE4VVQwvHBJa) (reason: 551 5.1.1 recipient is not exist) (reason: 550 #5.1.0 Address rejected.) (reason: 451 4.4.1 reply: read error from mx2.qiye.aliyun.com.) (reason: 550 Mail content denied [MM26xUelqNM/XXPSDV2nkTyvpn7Mz/dGDS5HJfQj8aUI4A6WEB4mRa4= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 Host unknown) (reason: 550 Host unknown) (reason: 550 Mail content denied [NSjjVjUmCg+CKH8MG1VNHrYsvkF/qZF3aLQFjX+Yd3hkI5fZ0jUVYGQ= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 554 RCPT (ydsale@yuden-tech.com.cn) dosn't exist) (reason: 550 permanent failure for one or more recipients (yeg@ywca.org.hk:blocked,yeghk@ywca.org.hk:blocked)) (reason: 550 permanent failure for one or more recipients (yeg@ywca.org.hk:blocked,yeghk@ywca.org.hk:blocked)) ----- Transcript of session follows ----- ... Deferred: Connection timed out with 1594484.vhost334.cloudvhost.top. ... Deferred: Connection timed out with 163.cn. ... while talking to qiye163mx01.mxmail.netease.com.: >>> DATA ... User unknown ... Deferred: 421 mail21.hmail.sg closing connection ... while talking to mx2.sgict.gov.sg.: >>> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> DATA >> DATA >> DATA >> DATA ,,,... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... while talking to mx2.sgict.gov.sg.: >>> RCPT To: ... User unknown >>> DATA >> DATA >> DATA >> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> DATA ... Deferred: 421 mail11.hmail.sg closing connection 550 5.1.2 ... Host unknown (Name server: pchone.com.tw: host not found) ... while talking to polyu-edu-hk.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [SG2PEPF000B66D0.apcprd03.prod.outlook.com 2025-01-28T10:52:07.861Z 08DD3E9E3601E03F] ... while talking to mailaz2b.schools.gov.sg.: >>> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> RCPT To: ... Deferred: 452 Too many recipients received this hour >>> DATA >> DATA >> DATA >> DATA >> DATA ... Deferred: 450 Requested action not taken: rfsmygC3sBZDt5hnB3ljAA--.55931S3, please try again 550 5.1.2 ... Host unknown (Name server: siaf.ac.cn: host not found) ... while talking to sutd-edu-sg.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [SG1PEPF000082E7.apcprd02.prod.outlook.com 2025-01-28T10:54:40.614Z 08DD3F14CE4093E1] ... while talking to mail.xjtlu.edu.cn.: ,... Deferred: 421 4.7.0 Not allowed. 550 5.1.2 ... Host unknown (Name server: .: host not found) ... while talking to mx-tw.mail.gm0.yahoodns.net.: >>> MAIL From: SIZE=3043 ... Deferred: 421 4.7.0 [TSS04] Messages from 83.138.65.30 temporarily deferred due to unexpected volume or user complaints - 4.16.55.1; see https://postmaster.yahooinc.com/error-codes ... while talking to mxbiz1.qq.com.: >>> DATA >> DATA >> DATA