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Office 365 Hosted Exchange

We are in the process of moving to hosted. Exchange. The autodiscovery record has been setup on the external DNS and when we are outside of the domain we can setup/connect and connect with outlook no problem. Internally it always connects to the internal email system. The dns internally is domain.com. I've set a cname record autodiscover.domain.com->autodiscover.outlook.com but this does not seem to work. It authenticates me using the hosted exchange email address and password but then connects to the internal exchange and not the hosted exchange.

The internal domain should have been domain.local but this is inherited. How do I bypass the internal Exchange server and use hosted exchange?
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1 Solution

This is probably because outlook is resolving the connection from AD or from the client computers registry, These are always checked before using the DNS record.

Depending on if your server is Exchange 2003 (does not use autodiscover) or 2007 or higher check this article: http://www.allcloudallthetime.com/2012/10/exchange-2007-to-office-365-mailbox-migration-autodiscover.html

Also check: HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Autodiscover\RedirectServers as mentioned over here: http://community.office365.com/en-us/forums/158/t/45179.aspx
mail2clkAuthor Commented:
We have Exchange 2003 Standard. I understand that exchange 2003 does not use autodiscover. I checked HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Autodiscover\RedirectServers and key entered is autodiscover-s.outlook.com. I changed it to autodiscover.outlook.com and we still have the same issue.

Does anyone have any other suggestions?
mail2clkAuthor Commented:
I created a CNAME record autodiscover for the internal domain and pointed it to autodiscover.outlook.com. The  ipconfig /flushdns [RETURN] then ipconfig /registerdns [RETURN]. This resolved the issue but you will lose connectivity to the onsite exchange.
mail2clkAuthor Commented:
It resolved the issue
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