With a Microsoft Exchange account, you can create server-only rules. These rules will run in your mailbox (on the server), even if Outlook is not running. The server rules should apply to messages as they are delivered (first time) to your your Inbox. They must be able to run to completion on the server.
For example, "a rule that specifies that a message is to be printed" can not be applied as it can't be completed on the server. If a rule can not be applied on the server and is applied when you start Outlook, it is called a client-only rule.
Client-only will only run on the computer. They can only be applied after their execution, such as specifying certain messages to be printed. Client-only rules will only run, if Outlook is running. If your list contains both types of rules, server rules are applied first, and then the client rules.
The "Move messages sent to a Contact Group folder" rule is only available if you are using an Exchange account. Only messages sent to the contact group are moved to the specified folder.
Transfer messages outside of your company
If you have an Exchange 2010 account, you can not use rules to forward messages to email addresses located outside of your company. This parameter is intended to prevent the disclosure of business data and can only be amended by an Exchange administrator .