The original message was received at Tue, 28 Jan 2025 09:46:33 +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) [SG2PEPF000B66CF.apcprd03.prod.outlook.com 2025-01-29T09:31:00.545Z 08DD3E6860C5570F]) ----- Transcript of session follows ----- 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... Deferred: Connection timed out with 126.com.cn. ... Deferred: Connection timed out with champion.com.cn.w.kunluncan.com. 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... Deferred: Connection timed out with hc-led.cn. ... Deferred: Connection timed out with mai1.1npgc.com.cn. 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout ... while talking to mantus-com-hk.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (AS780082) [SG2PEPF000B66CF.apcprd03.prod.outlook.com 2025-01-29T09:31:00.545Z 08DD3E6860C5570F] 451 skhwc.org.hk: Name server timeout 451 skhwc.org.hk: Name server timeout Message could not be delivered for 1 day Message will be deleted from queue