How can I make a messaging policy in Teams to stop users from editing DLP channelMessage

Question

I am manually blocking the DLP messages on a msteam channel. But the users can still edit the DLP content. Can I create some DLP or Channel message policy to stop users from doing so, but users still should be able to edit non DLP messages on the channel. Please list if any way to do it via an Ms Graph API call.

Answer 1

To prevent users from editing DLP messages in a Microsoft Teams channel, you can create a custom messaging policy that disables the ability to edit sent messages. However, this policy would apply to all messages sent in the channel, not just DLP messages. It is not possible to create a policy that only applies to DLP messages. Here are the steps to create a custom messaging policy in Teams:

1. In the left navigation of the Microsoft Teams admin center, go to Messaging policies.
2. Select Add.
3. Enter a name and description for the policy.
4. Choose the settings that you want. To disable the ability to edit sent messages, turn off the following settings:
   • Owners can delete sent messages
   • Users can delete sent messages
   • Users can edit sent messages
5. Select Save.
6. Assign the policy to the users who need it.

Please note that this policy would apply to all messages sent in the channel, not just DLP messages. It is not possible to create a policy that only applies to DLP messages.

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References:

• Manage messaging policies in Teams