********************************************** ** THIS IS A WARNING MESSAGE ONLY ** ** YOU DO NOT NEED TO RESEND YOUR MESSAGE ** ********************************************** The original message was received at Tue, 28 Jan 2025 09:32:53 +0100 from [165.154.252.200] ----- Transcript of session follows ----- ... while talking to i2r-astar-edu-sg01c.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK2PEPF00006FB5.apcprd02.prod.outlook.com 2025-01-28T13:05:35.269Z 08DD3F0EF0147F4A] ,,,... Deferred ... while talking to mx-apac.mail.gm0.yahoodns.net.: >>> MAIL From: SIZE=3240 ... 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 pap-org-sg.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [SG2PEPF000B66CA.apcprd03.prod.outlook.com 2025-01-28T13:05:39.904Z 08DD3F380E36B069] ... while talking to sal-org-sg.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK2PEPF00006FB2.apcprd02.prod.outlook.com 2025-01-28T13:05:42.855Z 08DD3E92498B10C8] Warning: message still undelivered after 4 hours Will keep trying until message is 1 day old