Hello,
To block an email address or entire domain name from sending email to your Hotmail account:
Go to the top right of your inbox, click the Gear, and select More mail settings:

Click the link for safe and blocked senders:

Click Blocked Senders:

Type in the email address or domain, then click Add to List:

To block an email address or entire domain name from sending email to your Hotmail account:
Go to the top right of your inbox, click the Gear, and select More mail settings:

Click the link for safe and blocked senders:

Click Blocked Senders:

Type in the email address or domain, then click Add to List:
