Hello, I have an professionnel account, and i've send too much mail in the same time. My account is blocked because I'm suspecting of sending spam. I don't know how I can fix this problem en unblock my account. Somebody can help me ?
If you're an administrator of your organization, you can follow the instructions here: https://technet.microsoft.com/en-us/library/ms.exch.eac.actioncenter(v=exchg.150).aspx.
If you're not an admin, please contact your IT or support team.