asked on

Exchange Hybrid Migration - Autodiscover

Hi guys,

Was hoping to clarify few questions with your help.

For Exchange Hybrid Migration:
Q1: Do we need to publish Autodiscover externally and point to the on-prem Exchange infrastructure?
Q2: At what stage is this required?
Q3: On-prem Exchange 2013 only has internal Autodiscover service URL, do we need to configure external URL also?
Q4: Once all mailboxes in O365, do we point Autodiscover to O365 instead?
Q5: What changes are required in internal DNS
Q6: Do we disable SCP with powershell? Set-ClientAccessServer -Identity servername -AutoDiscoverServiceInternalUri $NULL

Clients have combination of Outlook 2010, 2013, 2016
Outlook Anywhere is enabled

Thank you

ASKER CERTIFIED SOLUTION

Saif Shaikh

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Justin Hannah

ASKER

Thanks Saif, I'll wait few days if anyone else comments, otherwise all good.
With the last step we won't be uninstalling Exchange as will still have to manage certain Exchange attributes.

Saif Shaikh

Ok Sounds Good.

Justin Hannah

ASKER

Hi Saif,

Can you please collaborate on Q3 as to why is it necassary and what needs to be set?

Thank you

Saif Shaikh

Migration end point will look for external aurodiscover URL when you setup hybrid or run hybrid setup. So that is the purpose of requirement.

Justin Hannah

ASKER

Do I just put the same as for the InternalUri for each CAS? This won't affect anything else right?

Set-ClientAccessServer -Identity "Mailserver" -AutoDiscoverServiceExternalUri https://autodiscover.contoso.com.au/Autodiscover/Autodiscover.xml

Thanks

Saif Shaikh

O sorry my bad you were asking about this.

Sorry for earlier comment no it is not required external URi for autodiscover. Olly internal uri is fine.

I thought you were asking about web services virtual directory.

Justin Hannah

ASKER

Yea I was wondering why? :) All good.

I'm assuming there's no change for end users after publishing the Autodiscover externally? Apart from potential DoS attact. Might keep it right before the HCW configuration.