You can expose the "From" field for outbound email addresses in Outlook and
once it is exposed it stays exposed until you choose to hide it. Once it
is exposed you can type in a from address which could be an address other
than the default smtp address for the user. The way that you expose that
field varies with the version of Outlook etc. In general, create a new
email message then go to view, or options (Outlook 2007), etc. on the menu
bar and chekc the from field.
I hope this helps.
Jim Martin - (MSFT)
This posting is provided "AS IS" with no warranties, and confers no rights.