This will give you the steps to set up your Out of Office reply for both internal and external senders.
After completing this tutorial you will have the knowledge to set up your Out of Office reply.
In Outlook click on File in the upper left hand corner.
In the File Menu Click on the "Automatic Replies" button.
Click the dot next to "Send Automatic replies". Set when you want the Automatic replies to go out and stop going out. Type into each of teh two tabs the messages that you want each group to recieve.
Click "OK" to go back into Outlook.