I have a user who send email with url to more then 100 000 recipients. The 365 ATP Safe Link block its.
I know I can create an exception rule but the real root cause is still there because the other mail servers proctection (others mailfilter) will might block it too. My question is how can I know what is consider as malicious in the email fromat that we sent. Like that I can explain to user to not add this or do that.