When you right-click an email message in Microsoft Office Outlook 2007, Microsoft Outlook 2010 or in Microsoft Outlook 2013, there is no shortcut menu command to add a sender's domain to the Blocked Senders list.
Note When you right-click an email message, there is a shortcut menu command to add a sender's domain to the Safe Senders list.
Outlook 2010 and Outlook 2013
This behavior is by design in Outlook 2007, Outlook 2010 and in Outlook 2013. The command to block the sender's domain was not added to the shortcut menu in order to prevent users from accidentally clicking it. By clicking such a command, a user might have unintentionally blocked everyone who sends an email message from that specific domain. This includes everyone who uses a common carrier or ISP, such as @example.com.
To work around this behavior, manually add the sender's domain to the Blocked Senders list. To do this, follow these steps.
Right-click the email message that was sent from a domain that you want to block, point to Junk E-mail, and then click Junk E-mail Options.
Click the Blocked Senders tab.
Type the domain that you want to block, such as @example.com.
Click OK to close the Junk E-mail Options dialog box.