Ran into this issue a couple times now while migrating Small Business Server (SBS) clients from on-premis Exchange to Office365. After setting up the DirSync tool on the server, to add an email alias to a user’s Office 365 account it needs to be setup in the Active Directory Attribute Editor tab under the proxyAddresses attribute. The easiest way to do this is add a record as follows:

Add the Active Directory Attribute Editor Tab in Small Business Server

smtp:[useralias@yourcompany.com]

into the proxyAddresses section of the Attributes tab:

This is normally easy to do and then run a manual DirSync to add the alias to the user’s Office 365 account, but what if the Attributes tab is missing? It is time to break out the ADSIedit tool again to make the needed changes to the way these pages are displayed. Here are the steps to get it done:

• open ADSIedit.msc
• Right click on ADSIedit and choose “connect to”
• Under connection point select “select a well known Naming context” and in that window choose “Configuration”
• Under computer leave as “Default (Domain or server that you logged into)” then click OK
• Expand CN=configuration, DC=[your domain], DC=local
• Expand CD=DisplaySpecifiers
• Click on CN=your language. (The language # can be found on http://support.microsoft.com/kb/324097 for example US English is 409, so CN=409)
• In the right hand window locate CN=User-Display right click and choose properties
• Locate AdminPropertyPages, highlight it and click “edit” and add the line

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• In the right hand window locate CN=Computer-Display right click and choose properties
• ocate AdminPropertyPages, highlight it and click “edit” and add the line

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• In the right hand window locate CN= Default-Display right click and choose properties
• Locate AdminPropertyPages, highlight it and click “edit” and add the line

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Make sure to click on the View menu in Active Directory Users and Computers to choose the Advanced Features option if not already selected to see these newly added Active Director Attribute Editor Tab in the display.