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outlook365
we have an account on office365. from May 18th 2019 we are facing some issue in delivering the e-mails to groups. some of the group members are not receiving the e-mails some times. This is especiall...
Try to check the message header of emails that was junked and delivered (successfully). We can know why the message is junked. Also, are you setting up multi-function device or application to send email using Office 365? If yes, please refer to this - https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-office-3