Outlook 2010/2007: Block Email Addresses and Domains

Blocking specific email addresses and domains are essential to controlling the amount of junk mail you get in Microsoft Outlook 2010 or 2007. You can add email addresses and domains to the block list by using the following steps:

1. Outlook 2010 users select the Home tab, select Junk > Junk E-mail Options. Outlook 2007 users select Tools > Options > Preferences > E-mail > Junk E-mail.

Outlook 2010 junk email options

3. Click the Blocked Senders tab.

4. Click Add.

5. In the Enter an e-mail address or Internet domain name to be added to the list box, enter the name or address that you want to add. You can add entire domains or just an email address as follows:

  • username@domain.com
  • @domain.com
  • domain.com
Outlook 2010 blocked senders screen

6. Click OK when you are done.


  1. ForumHunter says

    You can also block all .info senders by adding typing “.info” (without the quotes). Same goes for .us, .com, .gov, .etc. I haven’t exactly proven this, but just by adding .info and .us I got my company email from about 50-75 spams a morning to 4-6.

  2. Frustrated says

    Can you use special characters to block say @a.*.com? So anything with a. in the domain gets blocked?

  3. Paolo-Andrea says

    Hi Mitch, in regards to the blocking of an email address I have followed your directions and still the emails keep on coming through all with the same email addresses that I thought that I had blocked. Any other suggestions?

  4. Carol says

    I use eFax for my business. I was receiving an eFax from a lender in LA that I was tired of receiving multiple times throughout a give day, so I “Blocked Sender”. I am now in a time crunch and cannot receive any document I send from my fax number. I have checked with eFax, very poor support I might add, to see if blocking a specific email has caused my problem. No response. I will now look for a new service as I need a working system. Going to Kinkos is not an option. Do you have any suggestions? Is it possible to Unblock something? I did not block my own eFax number. Thank you for your assistance in solving this problem.

  5. MJ Pickett says

    Skip the blocked sender stuff and go right to create rule function.DO NOT waste your time by opening the message. This procedure is designed for closed message.
    1. Right click on the e-mail address of the unwanted e-mail. A pop up menu will appear. (This can be done at the main menu, but it is more difficult.)
    2. Click on “Create Rule; another menu appears, it will give you provide any options you desire to move or remove e-mails.
    3. As you get comfortable, us the advanced features for more control.

  6. Jim says

    Same problem here. A company called Human Capital Management sends me emails almost everyday. I have unsubscribed from their email list, manually put their url and return email address in the block senders list and click on the junk mail indicator every time they show up. Nothing works. I would like to block them permanently but would be happy if they just went into my Junk email folder.

  7. jim says

    I have tried to block a certain company from sending me email. I have used the procedure noted above. I have manually entered their email address in my blocked sender list. The email address is in the blocked sender box. Nevertheless everyday I get an email from them.

    What else can I do?

  8. alex says

    Hi, I sent an email to someone else and I got a system undeliverable receipt at the bottom it said

    “The e-mail system was unable to deliver the message, but did not report a specific reason. Check the address and try again. If it still fails, contact your system administrator.
    < ironport.(ommitted).com #5.0.0 smtp; 5.3.0 – Other mail system problem 554-'5.7.1 Mail appears to be unsolicited "

    does this mean they have blocked me or marked me as spam?? I know the email address is right… we are both on Outlook…


  9. Emma says

    I did not block a sender in time. An e-mail has arrived from them. It is still marked as unread.
    Is there anyway I can make it appear to the sender that it did not get to me because I had previously blocked them? I don’t know if a message gets sent to a sender if their address has been blocked – but that is what I would like.

  10. MK says

    It’s for 2003 but worth a shot.
    How can I delete messages from the same sender that I do not wish to see?


    In Outlook 2003, right-click on the message and choose “Create Rule”

    In the dialogue box that opens up, check the From box if you wish to block messages from a certain sender.

    Note, many spammers will change their email address often, so this will only work for messages which always arrive from the same sender’s email address.

    Click OK and any messages from that sender will be automatically moved to the Deleted Items folder.

  11. Simon says

    Yes, a good idea. But this way, it well be in the junk e-mail folder. It still will have to be manually deleted.

  12. Dave says

    I have ouklook 2007 and all of my e-mails are sent to the blocked senders list. I have changed my settings to low automatic settings and email’s still go the blocked senders list. I have to creative rule to have the sender go to my inbox.

  13. Brent says

    Is there a way to block e-mail from domains that constantly change most characters in the domain name, but consistently use a recognizable naming convention that could be blocked with wild cards (don’t know if this is correct terminology).

    Example. I get many, many emails from a domain that always has h3 in the domain name…

    real examples:

    Is there a way in Outlook to block a domain using protocols like what used to be used in DOS commands?

    I am thinking there is a way to Use a command like “block *@*h3*.net”.

    It would be interpreted as “block e-mail from any address that has “any name” on the left of “@” that also has anything that includes “h3″ in the domain name.

    This would block a lot of SPAM for me.


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