O365 Email Encryption, Not receiving reply for encrypted emails

Question

I've configured Encryption labels for exchange online.
The encryption works fine, the recipient is requested to authenticate to view the email.
But when the recipient tries to reply it shows an email sent but it never reaches back.
below are the screenshots....
the Lable permission (co-Auther) allows Authenticated users to reply
Can you please help me to resolve this issue?

Thanks
Prakash

Answer 1

Hi @Prakash Modak

That's cool! Thanks for your feedback above which shared more information and glad to know that your issue is resolved now! Since our forum has the policy that The question author cannot accept their own answer. They can only accept answers by others, and according to the scenario introduced here: Answering your own questions on Microsoft Q&A

I would make a brief summary of this post so that other forum members could easily find useful information here:

[O365 Email Encryption, Not receiving reply for encrypted emails - Summary]

Issue Symptom:
Users cannot receive the reply for the encryped emails

Possible Causes:
InternalLicensing was showing False when running Get-IRMConfiguration

Solution:
Set-IRMConfiguration -InternalLicensingEnabled: $true

Reference Links:

Set-IRMConfiguration

You could "Accept Answer" for this summary to close this thread, and your action would be helpful to other users who encounter the same issue and read this thread. Thanks for your understanding!

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Answer 2

Hello @T. Kujala & @Joyce Shen - MSFT ,

it's working now :)
i went through the configuration again, and while checking IRM ( Get-IRMConfiguration ) , i observed that InternalLicensing was showing False, and Test-IRMConfiguration was showing passed with warning.
i enable InternalLicensing with the following command "Set-IRMConfiguration -InternalLicensingEnabled: $true" and after and hour it worked like charm.

Thank you very much for helping me, much appretiated.

Thanks & Regards
Prakash

Answer 3

Hi @Prakash Modak ,

Have you configured the message encryption by using the following guide?

https://learn.microsoft.com/en-us/microsoft-365/compliance/set-up-new-message-encryption-capabilities?view=o365-worldwide