The original message was received at Tue, 28 Jan 2025 10:37:23 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 550 #5.1.0 Address rejected.) (reason: 550 Mail content denied [Nu9f9OZKLqws/nL8sFNZ1Wc8Z51tBG6NC0dGRO8hJlQHoKYBEssIl3I= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20056.) (reason: 550 5.1.1 User unknown) (reason: 550 The email account that you tried to reach does not exist. Please try(194AC4854A8)) (reason: 551 5.1.1 recipient is not exist) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeQUgXQ1ecUAvfAYGHjVjKwFxaEgSXAwvHBhK) (reason: 550 RC:NE :The email account does not exist) (reason: 550 User suspended: ltworkhard@stu.xjtu.edu.cn) (reason: 550 5.7.0 DT:SPM .For more information, please visit https://feedback.qiye.163.com/static/feedback/#/bounce/ABFOBSMCeQZzUw5bcUAvfAYGHjVjKwFxaElPXAwvHBhK) (reason: 550 #5.1.0 Address rejected.) ----- Transcript of session follows ----- 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... while talking to dba-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) [HK2PEPF00006FAE.apcprd02.prod.outlook.com 2025-01-28T09:38:45.768Z 08DD3E2898F157F7] 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... while talking to 1827747096.mail.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [SG2PEPF000B66D0.apcprd03.prod.outlook.com 2025-01-28T09:39:01.720Z 08DD3E9E35DEC181] ... while talking to esa1.eurojust.europa.eu.: >>> RCPT To: ... User unknown >>> DATA >> DATA >> DATA ... User unknown >> DATA ... Deferred: 454 Transient reject by behaviour spam at Rcpt State(Connection IP address:83.138.65.30)ANTISPAM_BAT[01201311R5969S9910121220, maildocker-behaviorspam033037026184]: much too frequently sendingCONTINUE >> DATA ... Deferred: 454 Transient reject by behaviour spam at Rcpt State(Connection IP address:83.138.65.30)ANTISPAM_BAT[01201311R3169S0210121220, maildocker-behaviorspam033037018165]: much too frequently sendingCONTINUE >> RCPT To: ... User unknown 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... Deferred: Connection refused by meyerburger.cn. 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... while talking to mx1.smtp.goog.: >>> DATA >> DATA >> DATA >> DATA ,,... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect 451 skhwc.org.hk: Name server timeout ... while talking to mx1.qiye.aliyun.com.: >>> DATA ... Deferred: 454 Transient reject by behaviour spam at Rcpt State(Connection IP address:83.138.65.30)ANTISPAM_BAT[01201311R2968S4710121229, maildocker-behaviorspam033055200174]: too frequently sendingCONTINUE >> DATA ... Deferred: 454 Transient reject by behaviour spam at Rcpt State(Connection IP address:83.138.65.30)ANTISPAM_BAT[01201311R2168S0710121229, maildocker-behaviorspam033037018165]: too frequently sendingCONTINUE >> DATA ... Deferred: 454 Transient reject by behaviour spam at Rcpt State(Connection IP address:83.138.65.30)ANTISPAM_BAT[01201311R6268S7410121229, maildocker-behaviorspam033024137128]: too frequently sendingCONTINUE >> DATA ... User unknown >> DATA >> RCPT To: :The email account does not exist 550 5.1.1 ... User unknown >>> DATA >> DATA ... User unknown >> DATA >> RCPT To: ... User unknown >>> DATA ,... Deferred: 421 4.7.0 Not allowed. 451 skhwc.org.hk: Name server timeout ... while talking to mail.xmu.edu.cn.: >>> DATA ... Deferred: 450 Requested action not taken: BgAi0gCXBmTHpphnKxXlAA--.58466S3, please try again 550 5.1.2 ,... Host unknown (Name server: .: host not found)