HTML disclaimer breaks PGP encrypted emails

Tomass Pētersons 336 Reputation points
2022-03-05T18:16:09.397+00:00

Hi,

Our organization has a policy that adds a disclaimer to all emails received from outside the organization. Recently, one of our users reported that the PGP encrypted email message he received was corrupted.
180342-message.png

The disclaimer appears to break PGP encrypted emails, despite the fact that the rule states that if the disclaimer can't be applied, attach the message to a new disclaimer message.
180310-signature.png

I can add an exception that would not add a disclaimer to encrypted emails, but our organization policy states that a disclaimer is mandatory, so maybe there's another solution?

Thanks!

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,228 questions
0 comments No comments
{count} votes

Accepted answer
  1. KyleXu-MSFT 26,211 Reputation points
    2022-03-07T02:11:23.333+00:00

    @Tomass Pētersons

    I guess this phenomenon is caused by transport rule modifying the encrypted message body.

    Do you try to only modify the message subject like below?
    180430-qa-kyle-09-54-22.png


    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.



0 additional answers

Sort by: Most helpful