Forum Discussion
Microsoft Office 365 Error: "Delivery has failed to these recipients or groups"
Hi All, I have one Office 365 tenant as <tenantname>.onmicrosoft.com. While I am sending an Email from one Microsoft Office 365 Email Id to another Office 365 Email Id, then the error is appearing a...
Preeti321 Any specific reason you want to send emails from your Tenant Address and not your own Custom Domain ?
Please go through FAQ for Domain in Office 365 - https://docs.microsoft.com/en-us/office365/admin/setup/domains-faq?view=o365-worldwide
Additionally, are you a Microsoft Vendor (working for Support Projects) worldwide? If yes - Please reach out to your Technical Advisor for unblocking the Test Tenant you own, internally !!
If not, and you are only using it for your Own Learning and testing, you should not use domain.Onmicrosoft.com address for sending emails (except) testing.
Please delist your Tenant and IP by opening a Microsoft Support ticket.
Cheers !
Ankit Shukla
