Blocking domain.com does not automatically block subdomains like domain.com .
Type the email address (e.g., spam@example.com ) or domain (e.g., example.com ). Click , then click Apply and OK to close the window. 🍎 Outlook for Mac Open Outlook on your Mac. Click Tools in the top menu bar. Select Junk Email Preferences... from the dropdown. Click the Blocked Senders tab. Click the + (plus) icon at the bottom of the list. Type the specific email or domain you want to restrict. Close the window to save your settings automatically. Key Capabilities and Limitations Details and Limits Maximum Entry Limit list of blocked senders in outlook
Exchange and Microsoft 365 accounts sync this list across your web, desktop, and mobile apps. How to Unblock a Sender Blocking domain