There is a domain which continues to send me Junk E-mail but they change the first part of their email address each time and sometimes also the subdomain. Sadly, the Outlook Junk E-mail Filter doesn’t capture these emails automatically yet. I see options to safe list the Sender’s Domain but not to block the Sender’s Domain. Is there a way that I can block all emails coming from this domain via wildcards or something similar?
When you open your Junk E-mail Filter Options and go to one of the Blocked or Safe tabs, you can directly specify an address or domain in one of the following formats;
- @spamdomain.com
- spamdomain.com
- @sub.spamdomain.com
- sub.spamdomain.com
When Junk E-mail is coming from a sub domain, you usually want to block by using “spamdomain.com” anyway as you probably don’t trust the root domain then either.
Blocking an entire domain and all its sub domains can be done without the need for using special wildcard characters such as an asterisk (*).
Note: If you want to help to train the Junk E-mail Filter, you can use the Junk E-mail Reporting Tool.
Junk E-mail Options
- Simplified Ribbon (Microsoft 365)
tab Home-> ellipsis (…) button on the right-> button Junk-> button Junk E-mail Options… - Classic Ribbon
tab Home-> button Junk-> Junk E-mail Options…
Note: The Junk E-mail Options are controlled on a per account basis. To make sure that you set the options for the correct account, select the Inbox folder of the account that you wish to control before opening the Junk E-mail Options dialog. The title bar of the dialog will inform you for which mail account you are configuring the Junk E-mail Options.
Extra tip: Block country specific top-level domains
- Junk E-mail Options…-> tab International-> Blocked Top-Level Domain List…
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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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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.
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.
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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:
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.
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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- Auto CC/BCC by rules when sending email; Auto Forward Multiple Emails by custom; Auto Reply without exchange server, and more automatic features...
- BCC Warning - show message when you try to reply all if your mail address is in the BCC list; Remind When Missing Attachments, and more remind features...
- Reply (All) With All Attachments in the mail conversation; Reply Many Emails in seconds; Auto Add Greeting when reply; Add Date into subject...
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