If you belong to a mailing list or a distribution list, you can add the list sender to the Safe Recipients List. Messages sent to these e-mail addresses or domain names are never treated as junk, regardless of the content of the message. You can easily block messages from particular senders by adding their e-mail addresses or domain names to the Blocked Senders List.
When you add a name or e-mail address to this list, Outlook moves any incoming message from that source to the Junk E-mail folder. Messages from people or domain names that appear in this list are always treated as junk, regardless of the content of the message.
If you have existing lists of safe or blocked names and addresses, you can import them into Outlook. You can add a message sender or recipient to any Junk E-mail Filter list by right-clicking the message in your Inbox or other mail folder, pointing to Junk E-mail, and clicking on the desired option. This list enables you to block e-mail addresses that end in a specified top-level domain. To block unwanted e-mail messages that appear in another language, you can add encodings to the Blocked Encodings List.
This list enables you to block all e-mail addresses in a specified language encoding, also known as a character set. The remainder is sent in various other international encodings. The Blocked Encodings List lets you filter out unwanted international e-mail that is displayed in languages that you don't understand. Messages that have unknown or unspecified encodings will be subject to filtering by the regular Junk E-mail Filter.
All e-mail accounts in the same Outlook e-mail profile share the same Junk E-mail settings and lists. If you have both an Exchange account and a Windows Live Mail account, for example, each account has its own Junk E-mail folder.
However, if you have both an Exchange account and a POP3 account, junk e-mail for both accounts is located in the Junk E-mail folder for the Exchange account. If you change your profile, you should export a copy of the Junk E-mail Lists before you make the changes, and then import the information into Outlook.
This way, you will avoid the need for re-creating the Junk E-mail Filter Lists. Using Outlook in a Microsoft Exchange environment - much more common in business than with home or personal e-mail - offers another layer of capabilities and tools to combat junk e-mail. This means that if a sender appears in your Blocked Senders List, then messages from that sender are moved to the Junk E-mail folder on the server, and they are not evaluated by Outlook. They are available from any computer, but only if you have the Junk E-mail feature enabled in Outlook Web Access.
Note that if you use both Cached Exchange Mode and the option to download to a Personal Folders file. If you work online The Junk E-mail Filter is not available. Some junk e-mail can be dangerous or even fraudulent. The Junk E-mail Filter also automatically evaluates each incoming message to discover whether it might be suspicious, potentially fraudulent, or part of a phishing attack.
Manage and organize. Clean up inbox. Overview of the Junk Email Filter. How the Junk Email Filter works The Junk Email Filter evaluates each incoming message to assess whether it might be spam, based on several factors. How the Junk E-mail Filter works The Junk E-mail Filter evaluates each incoming message to assess whether it may be spam, based on several factors. Notes: Unicode encodings are not included in the Blocked Encodings List. Need more help?
Join the discussion. Was this information helpful? Yes No. Thank you! Any more feedback? 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. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical.
Not enough information. Not enough pictures. Any additional feedback? For greater granularity, you can also create custom anti-spam policies that apply to specific users, groups, or domains in your organization. Custom policies always take precedence over the default policy, but you can change the priority running order of your custom policies.
The difference between these two elements isn't obvious when you manage anti-spam polices in the Microsoft Defender portal:. To increase the effectiveness of spam filtering, you can create custom anti-spam policies with stricter settings that are applied to specific users or groups of users. You need to be assigned permissions in Exchange Online before you can do the procedures in this article:.
For more information, see Permissions in Exchange Online. For our recommended settings for anti-spam policies, see EOP anti-spam policy settings. Creating a custom anti-spam policy in the Microsoft Defender portal creates the spam filter rule and the associated spam filter policy at the same time using the same name for both. On the Anti-spam policies page, click Create policy and then select Inbound from the drop down list.
The policy wizard opens. On the Name your policy page , configure these settings:. 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. The default value is 30 days in new anti-spam policies that you create in the Microsoft Defender portal.
This setting also controls how long messages that were quarantined by anti-phishing policies are retained.
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