How to know Forwarding applied

Question

Want to achieve below, please let me know how we can.

internal user send email to (mail enabled user) mailuser@internaldomain.com >> email resolves to external address as user@externaldomain.com >> notify internal user that this email was forwarded to user@externaldomain.com ?

I found this , please let me know if it is possible.

1. Create a test label. --- possible
2. Create an EXO rule: apply label when the recipient is member of a group. ---- want to know , if it is possible and how.
3. Create DLP policy: if message contains the label >> notify sender with email and policy tip. --- possible

Answer 1

Hi @Microsoft Q & A，

You can set up a MailTip to appear when internal members send emails to this mail user.

 

For specific operations, please refer to the following:

1.      In the Exchange admin center , open Recipients-Contacts

2.      Click Specify mail user account

3.      Click Manage Mail tip under General

4.      Set the text and save

You can also refer to this command to modify mail tips for all mail users in bulk:

Get-mailuser|set-mailuser -mailtip “This is a mail user account! Your message will be forward to external!”

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