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Andrew MorrisFlag for New Zealand

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Outlook cannot connect to the Office 365 email account with autoi discover

I have just setup a client with Office 365 Exchange. The old SBS server is still on site but I have stopped all the Exchange services.
When I try and add the new profile it goes away to autodiscover the account but seems to find the old SBS exchange rather than the Office 365 Exchange.

If I setup a non domain computer with the new email it works fine on the same LAN. I even tried unplugging the SBS server to see if I can connect but it will not work
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crystal (strive4peace) - Microsoft MVP, Access
Avatar of crystal (strive4peace) - Microsoft MVP, Access
crystal (strive4peace) - Microsoft MVP, Access

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Jackie Man
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My wild guess is that the DNS manager of your DC still points to autodiscover A records of the old SBS server.

You need to:-

1. Open the DNS manager on one of your Domain Controllers.
2. Expand out the management tree until you can see your Internal Domain’s Forward Lookup Zone. Click on it, and make sure there are no A records for autodiscover.domain.local in the zone.
3. Once no autodiscover A records exist, right click the Zone name and select Other New Records.
4. Select Service Location (SRV) from the list.
5. Enter the setting for the SRV to the one of your Office 365 Exchange.
6. Hit OK to finish adding the record.
Once the SRV record is added to the internal DNS zone, Outlook and other autodiscover clients that attempt to configure themselves with a domain.local SMTP address will work properly without the Certificate errors on all versions of Exchange.

Source: https://acbrownit.wordpress.com/2012/12/20/internal-dns-and-exchange-autodiscover/
Avatar of crystal (strive4peace) - Microsoft MVP, Access
crystal (strive4peace) - Microsoft MVP, Access

thanks for the explanation, Jackie  ~
You can easily work around this by deploying the reg keys in this article: http://support.microsoft.com/kb/2212902

All you need working for O365 is the HTTP redirect method, you can block all others.
Vasil, I looked at that link for 2013 running under Windows 10 but the registry keys are different -- I found autodiscover-s.outlook.com with a value of 0000 but the article is not clear what to do ... thanks
The reg keys are the same, only the version number will differ (15.0 for Office 2013). But they are not present by default, so you need to create them (ExcludeHttpsAutoDiscoverDomain, ExcludeHttpsRootDomain and ExcludeScpLookup should be enough).
Email Servers
Email Servers

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

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