Windows spam filter

At Microsoft, we believe that the development of new technologies and self-regulation requires the support of effective government policy and legal frameworks. The worldwide spam proliferation has spurred numerous legislative bodies to regulate commercial email.

Many countries now have spam-fighting laws in place. The United States has both federal and state laws governing spam, and this complementary approach is helping to curtail spam while enabling legitimate e-commerce to prosper.

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Is this page helpful? Please rate your experience Yes No. Any additional feedback? Important The improved Microsoft Defender portal is now available. Note This topic is intended for admins. Tip The following anti-spam technologies are useful when you want to allow or block messages based on the message envelope for example, the sender's domain or the source IP address of the message.

Note By default, spam filtering is configured to send messages that were marked as spam to the recipient's Junk Email folder. Submit and view feedback for This product This page. View all page feedback. In this article. Manage and organize. Clean up inbox. Change the level of protection in the Junk Email Filter. Choose the level of protection you want.

Need more help? Join the discussion. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clean Email Filter emails like a Pro 4. Clean your Inbox Quickly find and delete all the emails you don't need anymore. Best Email Spam Filter Services Here at Clean Email, our priority is providing you with the best possible email management software to keep your inbox free of spam and other unwanted communications.

Clean Email Filter emails like a Pro. On the Users, groups, and domains page that appears, identify the internal recipients that the policy applies to recipient conditions :. Click in the appropriate box, start typing a value, and select the value that you want from the results. Repeat this process as many times as necessary. To remove an existing value, click remove next to the value. For users or groups, you can use most identifiers name, display name, alias, email address, account name, etc.

Bulk email threshold : Specifies the bulk complaint level BCL of a message that triggers the specified action for the Bulk spam filtering verdict that you configure on the next page greater than the specified value, not greater than or equal to.

A higher value indicates the message is less desirable more likely to resemble spam. The default value is 7. This setting dramatically affects the results of a Bulk filtering verdict:. Contains specific languages : Click the box and select On or Off from the drop down list. If you turn it on, a box appears. Start typing the name of a language in the box. A filtered list of supported languages will appear. When you find the language that you're looking for, select it.

Repeat this step as many times as necessary. Start typing the name of a country in the box. A filtered list of supported countries will appear. When you find the country that you're looking for, select it. Message actions : Select or review the action to take on messages based on the following spam filtering verdicts:. You enter the X-header field name not the value later in the Add this X-header text box.

For Spam and High confidence spam verdicts, the message is moved to the Junk Email folder. The message is delivered to the mailbox and moved to the Junk email folder. Redirect message to email address : Sends the message to other recipients instead of the intended recipients.

You specify the recipients later in the Redirect to this email address box. Delete message : Silently deletes the entire message, including all attachments. Quarantine message : Sends the message to quarantine instead of the intended recipients.

You specify how long the message should be held in quarantine later in the Quarantine box. You specify the quarantine policy that applies to quarantined messages for the spam filter verdict in the Select a policy box that appears. For more information, see Quarantine policies. For more information, see Configure junk email settings on Exchange Online mailboxes. In hybrid environments where EOP protects on-premises Exchange mailboxes, you need to configure mail flow rules also known as transport rules in on-premises Exchange.

These mail flow rules translate the EOP spam filtering verdict so the junk email rule in the mailbox can move the message to the Junk Email folder. When you later edit the anti-spam policy or view the settings, the default quarantine policy name is shown. For more information about default quarantine policies that are used for the spam filter verdicts, see this table. Retain spam in quarantine for this many days : Specifies how long to keep the message in quarantine if you selected Quarantine message as the action for a spam filtering verdict.

After the time period expires, the message is deleted, and is not recoverable. A valid value is from 1 to 30 days. The default value is 15 days in the default anti-spam policy and in new anti-spam policies that you create in PowerShell.