The original message was received at Tue, 28 Jan 2025 09:18:16 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK3PEPF00000221.apcprd03.prod.outlook.com 2025-01-29T08:18:21.062Z 08DD3E345339223E]) (reason: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK2PEPF00006FB0.apcprd02.prod.outlook.com 2025-01-29T08:18:45.713Z 08DD3E3E1013CFF7]) ----- Transcript of session follows ----- 451 roshen.cn: Name server timeout 451 roshen.cn: Name server timeout ... while talking to link-cuhk-edu-cn.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK3PEPF00000221.apcprd03.prod.outlook.com 2025-01-29T08:18:21.062Z 08DD3E345339223E] ... Deferred: Connection timed out with nitto-kogyo.com.cn. 451 roshen.cn: Name server timeout ... while talking to ust-hk.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [HK2PEPF00006FB0.apcprd02.prod.outlook.com 2025-01-29T08:18:45.713Z 08DD3E3E1013CFF7] Message could not be delivered for 1 day Message will be deleted from queue