Exchange Server 2010 removes the sender's email address from the recipient list in a redirected email message

To work around this issue in Microsoft Exchange Server 2007 and Microsoft Exchange Server 2003, forward the email message as an attachment. To manually forward an email message as an attachment in Microsoft Office Outlook 2007, click the email message, click Actions, and then click Forward as Attachment. To forward an email as an attachment by rule, click forward it to people or distribution list as an attachment in Step 1 when you create the rule.