Issue with Leaving Comments in Microsoft Planner

Copper Contributor

Hi everyone


I have been encountering an issue with Microsoft Planner within Microsoft Teams. Whenever I try to add comments to tasks, I receive an error message stating that the delivery has failed because the recipient's email provider has rejected it. This prevents me from leaving comments in Planner.


Error Details:
- Error message: "Delivery has failed to these recipients or groups: Your message wasn't delivered because the recipient's email provider rejected it."
- In addition to this email delivery error, I am unable to leave comments in Planner.

I need assistance to determine why these errors are occurring and how I can resolve this issue so that I can effectively use the commenting functionality in Planner.


Thank you in advance for your help!


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