Hi,

We have a single Exchange Organization consisting of 2 domains with separate Exchange services per domain. The parent domain servers are all at Exchange 2010 while the subdomain has been migrated to Exchange 2013 and all the Exchange 2010 servers have been decommissioned. I was looking at implementing MAPI over HTTP for the subdomain (which is Exchange 2013), however since part of the process involves a global setting (Set-OrganizationConfig -MapiHttpEnabled $true) I am concerned that this might impact the parent domain which is at Exchange 2010.

Any ideas?

Thank you.

Hi,

From your description, I would like to clarify the following thing:

MAPI over HTTP is an organization level setting. Since your old Exchange 2010 servers have been decommissioned, this setting shouldn't have an effect on them.

Hope my clarification can be helpful to you.

Best regards,

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Hi Amy,

Thank you for your reply.

I might have been a bit unclear in my original post. The parent domain is at Exchange 2010 and the child domain is at Exchange 2013, I am thinking about implementing MAPI over HTTP only in the child domain. Now since part of the process involves the command 'Set-OrganizationConfig -MapiHttpEnabled $true' will this somehow effect functionality in the parent domain which has only Exchange 2010 servers?

Thank you.

Hi,

Yes, the command will enable both parent and child domain users to use ROH. If you want only the child domain users to use ROH, you can use:

1. Enable for all users

Set-OrganizationConfig -MapiHttpEnabled $true

2. Disable ROH through server level:

Disable-OutlookAnywhere -Server:'ServerName'

Or Disable ROH through mailbox level:

Get-mailbox database parentusersDB | set-CASMailbox  -mapiblockoutlookrpchttp $false

Thanks,

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Hi,

Is there any update on this thread?

Thanks,

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Hi Simon,

I need the users in the parent domain (Exchange 2010) to use Outlook Anywhere, so I'm not in a position to do that. I just need to know if enabling MAPI over HTTP in the child domain (Exchange 2013) will have any unwanted effect on the parent domain.

I have now opened a ticket with Microsoft support and will update this thread with their reply.

Thank you.

Hello,

 

The Set-OrganizationConfig command is an organization level switch for Outlook Anywhere. It will affect the all the domains.

 

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