Office 365, Primary Email Address and Alias Email Addresses

We have a new client who we are moving to Office 365, part of the setup i have used DirSync to move their usernames to Office 365, I had run into an issue where i pretty much couldn't change anything because it was syncd with AD.  Well ok so what????

I decide to google away and found a couple of articles that i assume just scratches the surface of AD, DirSync and Office 365.

http://community.spiceworks.com/topic/410677-office-365-w-ad-sync-primary-email-address-woes

http://enterpriseit.co/office365/create-email-alias-dirsync/

The above articles explain using the proxyAddresses attribute within AD to add alias to email accounts within Office 365.

Basically you add the emails addresses to the proxyAddresses attribute in this format:

SMTP:main_email_address@company.com
smtp:alias@company.com
smtp:another_alias@company.com

Note:  Using upper case SMTP denotes Default Reply address.

-Fr33ze