The original message was received at Tue, 28 Jan 2025 10:21:42 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 550 #5.1.0 Address rejected.) (reason: 550-5.1.1 The email account that you tried to reach does not exist. Please try) ----- Transcript of session follows ----- ... while talking to mx1.smtp.goog.: >>> DATA >> DATA >> DATA >> DATA ,,,,,,... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect ... while talking to mx2.sgict.gov.sg.: >>> RCPT To: ... User unknown ... while talking to nyp-edu-sg.mail.protection.outlook.com.: >>> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [SG1PEPF000082E4.apcprd02.prod.outlook.com 2025-01-28T09:26:18.070Z 08DD3E4EA3B15C37] ... while talking to aspmx.l.google.com.: >>> DATA ... User unknown >> DATA ... Deferred: 451 4.7.500 Server busy. Please try again later from [83.138.65.30]. (S77714) [TYO1EPF00005026.JPNP286.PROD.OUTLOOK.COM 2025-01-28T09:26:58.184Z 08DD3E4AA7430DEF]