How to add sender domain to blocked senders list in Outlook?
Have you ever suffered with thousands of spam emails, you may receive hundreds of messages a day from the same domain, and you want to add these domains to the blocked senders list, so that when you get the emails from these domains, they will be moved to the Junk E-mail folder automatically.
Add sender domain to blocked senders list with Junk E-mail Options
Add sender domain to blocked senders list with Kutools for Outlook
Add sender domain to blocked senders list with Junk E-mail Options
With the "Junk E-mail Options" function of Outlook, you need to enter the domains to the Blocked senders list manually. Do as following steps:
1. Go to "Home" > "Junk" > "Junk E-mail Options", see screenshot:

2. In the "Junk E-mail Options" dialog box, click "Blocked Senders" tab, and then click "Add" button. In the popped out "Add address or domain" box, input the domain that you want to block, see screenshot:

3. And then click "OK" to close the box. The entered domain will be added to the "Blocked Senders list", and if you want to add other domains, you just need to repeat the step 2.

4. Then click "OK" to close the "Junk E-mail Options" dialog. When you receive emails from the blocked domains, the emails will be considered as junk emails.
Add sender domain to blocked senders list with Kutools for Outlook
With the above method, you need to enter the domain one by one, if there are lots of domains you need to block, I can introduce you an easy way. With this Kutools for Outlook's "Block Sender Domains" utility, you can quickly add multiple domains to the blocked list at once with several clicks.
If you have installed Kutools for Outlook, please do as follows:
1. Hold "Ctrl" key to select the messages which you want to block these sender’s domains.
2. Click "Kutools" > "Junk Email Filter" > "Enable Junk Email Filter" to activate this function, see screenshot:

3. And then click "Block Sender Domains" under "Junk Email Filter", and a prompt box will appear to remind you that the selected emails sender domain have been added to the blocked list. See screenshots:
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4. Click "OK" to close the prompt box, and you can go to the "Junk Email Filter Manger" to preview the rule. In the dialog box, you can edit, delete, export or import the rule. See screenshots:
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The emails which are from these blocked domains will be moved to the Junk emails folder automatically when you receive them next time.
Click to know more about this Block Sender Domains feature.
Related articles:
- How to add sender domain to safe senders list in Outlook?
- How to add email addresses to safe senders list in Outlook?
- How to add senders address to blocked senders list in Outlook?
- How to block emails based on specific subject in Outlook?
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