https://www.bleepingcomputer.com/news/microsoft/microsoft-fixes-exchange-online-bug-flagging-gmail-emails-as-spam/ > ​Microsoft has resolved an issue with a machine learning model that mistakenly flagged emails from Gmail accounts as spam in Exchange Online. > Tracked as EX1064599 in the Microsoft 365 admin center, the issue started impacting users on April 25 at 09:24 UTC, automatically moving emails erroneously tagged as malicious to the junk folder.