Outlook Blocked Senders List ((link)) Jun 2026

| Limitation | Explanation | |------------|-------------| | | The sender can still email you — it just goes to Junk, not deleted. Outlook doesn't reject the message at the server level. | | Doesn’t block senders inside your organization | Many corporate Outlook setups ignore blocked senders for internal addresses. | | No “block and delete” directly | To auto-delete, you need a Rule that moves Junk email to Deleted Items. | | Spammers change addresses | Blocking badguy@example.com won’t stop badguy2@example.com . Block the domain instead ( @example.com ). |

Research into anti-spam technologies highlights several critical flaws in relying on Blocked Senders Lists. outlook blocked senders list