http://blogs.technet.com/b/ilvancri/archive/2011/10/14/exchange-online-change-primary-smtp-address-without-changing-sign-in-address.aspxBy default, when you mail-enable a user, that user will be given an e-mail address that matches the user’s online services id. You can always add other e-mail addresses, using Exchange Control Panel: As you can see, it is not possible to change the primaryen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/ilvancri/archive/2011/10/14/exchange-online-change-primary-smtp-address-without-changing-sign-in-address.aspx#3555371Wed, 27 Feb 2013 20:02:41 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3555371Corey Webb<p>You can download the complete Exchange DVD here: <a rel="nofollow" target="_new" href="http://www.microsoft.com/en-us/download/details.aspx?id=36768">www.microsoft.com/.../details.aspx</a>. &nbsp;You have to go through the entire install process, selecting only &quot;Management Tools&quot; during the custom install.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3555371" width="1" height="1">http://blogs.technet.com/b/ilvancri/archive/2011/10/14/exchange-online-change-primary-smtp-address-without-changing-sign-in-address.aspx#3553624Tue, 19 Feb 2013 18:35:44 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3553624Kipp Hollingsworth<p>I second Thomas&#39;s comment as I&#39;m in the same situation. On Office 365 without a CD to install the Management Console with, can it be downloaded somewhere?</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3553624" width="1" height="1">http://blogs.technet.com/b/ilvancri/archive/2011/10/14/exchange-online-change-primary-smtp-address-without-changing-sign-in-address.aspx#3550949Thu, 07 Feb 2013 01:42:05 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3550949Thomas Valley<p>I&#39;d be interested in using the Exchange Management Console, but as an Office365 subscriber only, I don&#39;t have an installation CD from which to pull the Management Console. &nbsp;Is it available elsewhere? &nbsp;I can&#39;t seem to find a straight answer.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3550949" width="1" height="1">http://blogs.technet.com/b/ilvancri/archive/2011/10/14/exchange-online-change-primary-smtp-address-without-changing-sign-in-address.aspx#3459573Mon, 17 Oct 2011 02:22:52 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3459573Leonardo Côco<p>Excellent article, will be very useful to the community, congratulations</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3459573" width="1" height="1">