If you use block lists to deflect missed spam, you need to keep the topic Report messages and files to Microsoft at the ready. Managing false negatives by using block lists significantly increases your administrative overhead. While you can use organization-wide block settings to address false negatives (missed spam), you should also submit those messages to Microsoft for analysis. Outlook Blocked Senders (the Blocked Senders list that's stored in each mailbox)īlocked sender lists or blocked domain lists (anti-spam policies)
HOW TO BLOCK A SENDER IN OUTLOOK WEB ACCESS FULL
The list goes from narrow to broad, but read the specifics for full recommendations. The following options are ranked by both impact scope and breadth. For many users, one of the other options would be more appropriate. For a single user, the right solution could be Outlook Blocked Senders.
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The best method to block senders varies on the scope of impact. Collectively, you can think of these options as blocked sender lists. These options include Outlook Blocked Senders, blocked sender lists or blocked domain lists in anti-spam policies, Exchange mail flow rules (also known as transport rules), and the IP Block List (connection filtering).
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In Microsoft 365 organizations with mailboxes in Exchange Online or standalone Exchange Online Protection (EOP) organizations without Exchange Online mailboxes, EOP offers multiple ways of blocking email from unwanted senders.
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