Sometimes When out of the office, you might want to auto respond with an email letting other users know you are out, and also send a copy of your message to a co worker or someone else.
Note: For a primer on the Out Of Office Assistant, see:
http://it.precisemachining.com/kb/index.php?/archives/7-How-to-use-the-Out-of-Office-Assistant-in-Outlook.html
Forward without notification
You should use this method if you do not want people sending you email to be
aware that your mail is being forwarded, nor that you have an alternate
email address.
To set forwarding without notification:
1. In
the Outlook Inbox, click on Tools | Rules and Alerts
to display the Rules and Alerts dialog box. If a window appears asking whether to keep “Client”
rules or “Server” rules, click on the Server button.
2. In the
Rules Wizard dialog box, click on the New Rule button to
display the first step in the rule creation wizard.

3. Click
in the Start from a blank rule box, make
sure that the Check messages when they arrive option is selected
and click on the Next button. The second step in the rule creation wizard will be displayed. This step
lets you set conditions.
4. For the rule to apply to all incoming messages, make sure that none of
the conditions are ticked and click on the Next button. A warning message will be displayed.
5. Click
on the Yes button to confirm that you want the rule to be
applied to all incoming email. The third step in the rule creation wizard will be displayed. This step lets
you set actions.
6. In the list of actions,
tick redirect it to people or distribution list. (Do not tick “forward it to people or distribution list” as this
option is a client only action and requires Outlook to be running for it to
work.) The redirect statement will be added to the rule description area.
7. In the rule description area, click on the blue underlined phrase
people
or distribution list to set the address to send messages to. The Rule Address dialog box will be displayed.
8. An internal address can be selected by choosing it from the list in the
left pane and clicking on the To button. An external address can be typed directly into the right pane.
9. After specifying the address to forward to, click on the
OK button to return to the Rules and Alerts step 3 dialog
box.
10. The redirect action only forwards a copy of the incoming mail to
the specified destination. The original message will remain in your
LSE Inbox. To avoid
a build up of forwarded mail in your Inbox, it is recommended that
you also tick the delete it option. This will only delete the LSE copy of
the message and not affect the forwarded copy. (Do not tick the “permanently
delete it” option as this option is a client only action and requires
Outlook to be running for it to work.)
Note: Selecting the delete option in addition to the redirect option will
forward a copy of the incoming message and then move it to the Deleted Items
folder. It will remain there until the Deleted Items folder is emptied.
Messages in the Deleted Items folder count towards the size of the mailbox
and can cause the mailbox to go over quota. Emptying the Deleted Items
folder regularly will prevent this from happening. The Deleted Items folder
can also be emptied via the web email service by clicking on the “Empty
Deleted Items Folder” button.
11. Click
on the Finish button and the rule will be listed in the Rules and Alerts window.
12. Click
on the OK button.
Forward with notification
Using this method to forward mail from your Microsoft Exchange Inbox
automatically informs your correspondents of your alternate email address
along with an appropriate message.
to display the Out of Office Assistant
dialog box.To set forwarding with notification:
1. In the Inbox, click on Tools
| Out of Office Assistant to display the Out of Office Assistant
dialog box. 
2. In the
dialog box, click on the I am currently Out of the
Office button.
3. In the rectangular text box headed
AutoReply only once to each sender
with the following text, type in your message that will be autoreplied with.
4. Click on
Add Rule button to display the Edit Rule dialog box.
5. In the
Perform these actions section of the Edit Rule dialog box, click
in the Forward check box (located three rows from the
bottom of the dialog box) until a tick or check mark appears and the To: text box to the right of it
brightens up.
6. Click
on the
To button to specify an address to forward to and the Choose Recipient dialog box will be displayed.
7. An internal address can be selected by choosing it from the list in the
left pane and clicking on the To button. An external address can be typed directly into the right pane.
8. After specifying the address to forward to, click on the
OK button to return to the Edit Rule dialog box.
9. From the drop-down list next to
Method, select the option Leave message
intact.
10.
The Forward action only forwards a copy of the incoming mail to the
specified destination. The ‘original’ message will remain in your Inbox. To avoid
a build up of 'forwarded' mail in your Inbox it is recommended
that you also tick the Delete option in the Perform these actions section
of the Edit Rule dialog box. This will only delete the local copy of the message and not affect the
forwarded copy.
11. Click on the
OK button at the top right of the Edit Rule dialog box.
12. Click on the
Yes button in the message box asking you to confirm the
action. The Inbox Assistant dialog box will be displayed with your forwarding rule
listed.
13. Click on the
OK button to return to the Microsoft Outlook window.
Cancel a forwarding rule
When you
return and wish to have regular access to your email, you will need to cancel
the forwarding rule.
To
cancel a forwarding rule:
1. On the Tools menu, choose either Rules and Alerts or
Out of Office
Assistant - according to which you used to set up your forwarding rule.
2. In the list of rules either:
3. Click on the
Yes button to confirm that you want the rule to be deleted.
Note: If using the Out of Office Assistant, click on the option “I am
currently in the Office” to cancel it.