Open Outlook on your desktop computer.
On the menu bar at the top of the Outlook window, click on TOOLS, then RULES AND ALERTS?
The Rules and Alerts window will open, and will list rules you have previously created (if any). Click on NEW RULE in the upper left portion of the window.
The Rules Wizard window will open to walk you through the rule creation process. On the first screen, select DELETE A CONVERSATION from the list of options, then click NEXT.
On the next window, select FROM PEOPLE OR DISTRIBUTION LIST in the top portion of the window, then click on FROM PEOPLE OR DISTRIBUTION LIST under Step 2 to set the e-mail address for the mail you would like to automatically delete.
The Rule Address window will open to the Outlook Global Address list. You can select the address from the address book, or you can manually type in the address in the FROM field. For example, if you want to automatically delete all incoming mail from John Doe at Sprint, you would enter John's address in the FROM box. Click OK, then click NEXT.
On the next window, verify that DELETE IT is checked, and that Step 2 reflects the correct e-mail address of the mail you want to be deleted, then click FINISH.

Your new rule will be listed at the top of the Rules and Alerts window. Click OK and the rule will be updated on the Exchange server.
Now, any mail sent to you from johndoe at sprint.com will be automatically put into your DELETED ITEMS folder.