The original message was received at Fri, 24 Jan 2025 18:57:32 -0500 from localhost [127.0.0.1] ----- The following addresses had permanent fatal errors ----- (reason: 550 5.7.606 Access denied, banned sending IP [52.4.236.121]. To request removal from this list pleas...26655 AS(1427) [SJ1PEPF00002325.namprd03.prod.outlook.com 2025-01-24T23:57:33.164Z 08DD37562BCB532C]) ----- Transcript of session follows ----- ... while talking to southernplcs-com.mail.protection.outlook.com.: >>> DATA ... User unknown