The original message was received at Tue, 28 Jan 2025 09:44:42 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 500 5.7.0 Policy Access Control) (reason: 553 "RCPT TO" mailbox unavailable) (reason: 553 5.1.5 Recipient not exists) (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: 550-5.7.1 [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 Mailbox unavailable or access denied [N/u+XgB1UQZ7OFTkoYPr7NE6PR+Vt5XniZ/2N5iEG6RoIhpj1+504l0= IP: 83.138.65.30]. https://open.work.weixin.qq.com/help2/pc/20057.) ----- Transcript of session follows ----- ... while talking to mx1.ccs.org.cn.: >>> MAIL From: SIZE=3101 >> DATA ... User unknown >> RCPT To: ... User unknown >>> DATA >> DATA >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [HK2PEPF00006FB1.apcprd02.prod.outlook.com 2025-01-28T08:48:46.749Z 08DD3E48C965071B] ... while talking to aspmx.l.google.com.: >>> DATA >> DATA ... Deferred: 450 Requested action not taken: NAGowABnZpM2mphnyVSCAA--.31625S3, please try again ... while talking to mxbiz1.qq.com.: >>> DATA ... Deferred: 421 4.7.0 Not allowed.