How to get "e-mail address" from the "Display Name"?

I have a requirement like this:

I have the "Displayed Name" which appears on the "To" or "From" field of
a Outlook mail like "Some Body". I am getting this string (the "Displayed
Name" from a database table) .... I need to know the actual e-mail address
... I think I need to query the Exchange server (which is in a separate machine)
to get the actual mail address like "".

I dont have MS-Office or Outlook installed on this server (where this operation
is going to run).

I know how to do this with Outlook VBA scripting, but without the Outlook
APIs being available, how can this information be extracted from the Exchange

Any References/Code Snippet/Examples? Thanks in advance!