I had this problem the first time our AD synched to EOA.
The user principal names (UPN), email addresses, or proxy addresses of users contain an Office 365 domain after synchronization
January 6, 2012
Exchange 2010, Exchange Online Archiving, Work Leave a comment
Understanding the Hybrid Configuration Wizard
January 6, 2012
Manually install Office 365 desktop updates – Office 365 Service Administration – Office 365 – Microsoft Office 365 Community
January 6, 2012
Install and Configure Single Sign on and AD Sync for Exchange Online Archiving
January 5, 2012
Prepare for Single Sign on -
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652540.aspx –
Install and Configure the Microsoft Online Services Module for Windows Powershell for single sign on - installed on BGBCA
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652560.aspx –
Setup your desktop for Office 365 –
had to install the update for the sign on assistant on my machine first – http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff637594.aspx –
Use Windows Powershell to manage Office 365 -
http://onlinehelp.microsoft.com/en-us/office365-enterprises/hh124998.aspx –
Article on how to deploy ADFS -
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652539.aspx#bk_plandeploy
ADFS Server is BGBADFS1 and the token Signing certificate is sts.brasfieldgorrie.com
Prepare for Active Directory Synchronization -
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652544.aspx#BKMK_SetupIdentityFed
Install the Microsoft Online Services Directory Synchronization tool – installed on BGBCA
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652545.aspx –
Configure the Microsoft Online Services Directory Synchronization tool –
http://onlinehelp.microsoft.com/en-us/office365-enterprises/ff652557.aspx