How to Block Specific E-mail Addresses or Domains in Office 365

In your preferred browser, go to Okta and click on Office 365 Mail

1. Click on settings
2. Click mai”
3. Click Block or allow
4. Click + icon and type in the domain you want to block (i.e. spamemails.com or [e-mail]) and then click the + icon again.
5. Click on Save