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How to configure server 2008 to not lookup email adres locally but to the hosted exchange on the Internet

Posted on 2014-10-05
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Last Modified: 2014-11-16
Hi all,

I have a 2008 server with Exchange and 10 mailboxes. The mailboxes are moved to Hosted Exchange so I need to reconfigure Outlook. Hosted Exchange works with autodiscover, but Outlook defaults to de local server and not to Internet, so it configures the mailadres which I do now want to use (local). I do not yet want to remove the local adresses because off fallback and backup.

How do I configure server 2008 so that the Outlook client checks the autodiscover through the Internet?
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Question by:Agrippa
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by:Suliman Abu Kharroub
Suliman Abu Kharroub earned 167 total points
ID: 40362642
Configure the internal DNS records to be resolved externally. for example, if mail.company.com points to 192.168.1.1 internally change it to 1.1.1.1 (Public exchange CAS ip).
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Author Comment

by:Agrippa
ID: 40362647
Hi Suliman,

that is not the solution I seek, time and again I would need to bother users while I am making changes when adding a new hosted exchange user. Also I work through Teamviewer remote, so I will lose connection. I need to disable the local seek for mailadresses.
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by:Gareth Gudger
Gareth Gudger earned 167 total points
ID: 40362782
Hey Elisys. This shouldn't require bothering any users. You would make this change once on your internal DNS server. If anything, you just need to make sure that users flush their DNS cache (or reboot) to pick up the new DNS entries.

As Suliman mentioned, you need to modify DNS records on your internal DNS server to point to their cloud provider.

Assuming you have Office 365 you would do something like this.

Create a CNAME record in your internal DNS that resolves "autodiscover" to "autodiscover.outlook.com"
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by:Simon Butler (Sembee)
Simon Butler (Sembee) earned 166 total points
ID: 40363297
If you remove Exchange from the server, then local Autodiscover will not take place.
You would only need additional DNS records if the internal WINDOWS domain name is the same as the external domain name (so domain.com instead of something like domain.local).

You can make as many internal DNS record changes as you like - all the time that Exchange is installed on the server they aren't going to work, because the client will ALWAYS look at the local domain first.

If you don't want to remove the Exchange server then you will have to reconfigure it.

get-clientaccessserver | set-clientaccessserver -AutodiscoverServiceInternalURI https://host.example.com/Autodiscover/Autodiscover.xml

where host.example.com is the name of the host the hosted Exchange company has told you to use for Autodiscover.

Simon.
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Expert Comment

by:vishal_breed
ID: 40363431
This is a shared hosting and it is better to have emails going through Local Exchange servers than connecting local server over internet (you are loosing MS Exchange advantage be seeking solution otherway).

Following articles are talking about Exchange 2007, please let us know if other Exchange Version you are using.

http://www.msexchange.org/articles-tutorials/exchange-server-2007/migration-deployment/shared-hosting-exchange-2007-part1.html
http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/shared-hosting-exchange-2007-part2.html
http://www.msexchange.org/articles_tutorials/exchange-server-2007/migration-deployment/shared-hosting-exchange-2007-part3.html
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Accepted Solution

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Agrippa earned 0 total points
ID: 40434649
Hi all,

thankx for every reactie. I also guess that changing DNS might actually work, but I cannot do that since I am not on site, I am logged on remote. Also the suggestion of removing Exchange would work, but I want to keep a fallback situation, so therefore this would not be an option for me. What I did was changing the internal email adres so I does not match the email adres from the hosted exchange. So once I give in the right mail address in the Outlook profile config it checks if it exists internally, if not it will go by autodiscover to the Internet.

So: just change the internal address to f.i.: name-old@company.com
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Author Closing Comment

by:Agrippa
ID: 40445441
Own solution is the easiest solution
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