The original message was received at Tue, 28 Jan 2025 10:56:18 +0100 from [165.154.252.200] ----- The following addresses had permanent fatal errors ----- (reason: 550 #5.1.0 Address rejected.) (reason: 550 #5.1.0 Address rejected.) (reason: 550 #5.1.0 Address rejected.) (reason: 550 #5.1.0 Address rejected.) ----- Transcript of session follows ----- ... while talking to mx1.sgict.gov.sg.: >>> RCPT To: ... User unknown ... 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 mx1.sgict.gov.sg.: >>> RCPT To: ... User unknown >>> RCPT To: ... User unknown >>> RCPT To: ... User unknown >>> DATA >> DATA >> DATA >> DATA >> DATA >> DATA ... Deferred: 421-4.7.28 Gmail has detected an unusual rate of unsolicited mail. To protect