How to Fix the error in New Mail Flow Rule - Unable to complete settings

Question

I was trying to apply new Mail Flow Rule to restrict sender to send any mail outside the organisation. After selection of setting "is this person", "The sender is Select one" option appears. Then after this I am neither able to select any person (as no dialog box appears to select any person" nor do i able to select any other option. The rule gets stuck here. Kindly help me to resolve this issue.

Answer 1

Hi @Kunwar Yuvraj Singh ,

Based on your description, I tried testing in my lab tenant but cannot reproduce the issue. In case it's a temporary backend issue, could you try it again now and see the result?
Are you able to complete the settings if choosing another rule condition?
Noticed that you are using the InPrivate mode, any difference if opening the browser in normal mode?

Besides, please try creating the rule using Exchange Online Powershell and check how it goes:

New-TransportRule "New Rule" -From "user1" -SentToScope NotInOrganization -RejectMessageReasonText "Messages sent outside are strictly prohibited."

---

If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.