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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

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arrow blue right bubble 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 step2.


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.

arrow blue right bubble 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.

Kutools for Outlook: with more than 20 handy Outlook add-ins, free to try with no limitation in 45 days. Get it Now.

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:

doc-block-domain-2 -2 doc-block-domain6

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:


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.

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Comments (5)
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This comment was minimized by the moderator on the site
Re: Incorrect Information

Your recent online article titled "How to add sender domain to blocked senders list in Outlook?" at the url below completely ignores the actual problem.

You blindly rushed in to provide an answer without knowing the actual problem.
I will explain it and provide examples. The two examples below show what the original questioner asked about when he said,"...
they change the first part of their email address each time and ...also the subdomain." Since major spammers change the first part of

the e-mail address with every new e-mail as well as the part immediately after the "@" symbol and only use the same subdomain, spam filters do not have the correct format nor permit use of wildcards to block professional spammers. In the two examples below, only the subdomain "fi" is used repeatedly.

Since the spammers can generate an unlimited number of e-mail addresses to send spam, it is currently impossible to block the spammers' entire subdomain of "fi" as MS' current system does NOT allow use of wildcards to block spam. This has been a problem for at least four years and I have reported and complained about it many times.

To block the spammer above, it would be necessary to be able to block e-mails using the following format: *@*.fi or *@*fi .
If you can develop a system to do so, please provide it to MS Outlook developers as they are in dire need of it.
This comment was minimized by the moderator on the site
Exactly. I get thousands of spam messages from @build---, with unlimited letters, numbers and characters after the "@build." There are several other domain names like this, with a common set of initial letters. I am blocking 10-25 domain names every day just to keep up. This is getting unbearable.
This comment was minimized by the moderator on the site
The blocked domain function in Outlook is useless, come on Microsoft can't this be fixed?
This comment was minimized by the moderator on the site
yeah but spammers are getting snaky they are latching on to other real domains I may not want to block a real for sale site, like @gumtree. com, yet I get spam frem the filter wont let me use the two full stops!

and If I try to block @gumtree I loose my notifications and still get all the spam!
This comment was minimized by the moderator on the site
I'm just trying to see a list of blocked senders.
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