The original message was received at Tue, 28 Jan 2025 09:21:47 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 451 4.4.1 reply: read error from mxn.mxhichina.com.) ----- Transcript of session follows ----- ... Deferred: Connection timed out with agent31.juming.com. ... while talking to magura-com-tw.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [SG1PEPF000082E8.apcprd02.prod.outlook.com 2025-01-28T12:34:43.253Z 08DD3E591F713C54] ... Deferred ... while talking to mxn.mxhichina.com.: >>> DATA >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK2PEPF00006FB4.apcprd02.prod.outlook.com 2025-01-28T12:34:53.891Z 08DD3E740468CD99] Warning: message still undelivered after 4 hours Will keep trying until message is 1 day old