The original message was received at Tue, 28 Jan 2025 09:28:33 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 554 RCPT (estherliu@yingxiangtex.cn) dosn't exist) ----- Transcript of session follows ----- ... while talking to chineseswimmingclub-org-sg.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 2025-01-28T13:03:41.441Z 08DD3E9E363D9CCC] ... while talking to mail11.hmail.sg.: ,,... Deferred: 421 mail21.hmail.sg closing connection ... while talking to mx2.fatima.pt.: >>> DATA ... Deferred: 451 4.3.2 Please try again later >> DATA ... Deferred: 451 4.3.2 Please try again later >> DATA >> RCPT To: ... Deferred: 451 4.3.2 Please try again later >>> DATA