o365 AD-integration with Server 2012R2 DC

What is recommended way to do o365 AD integration with W2012R2 std AD server?

Basicly we just want to integrate usernames and passwords from AD to exiting o365 accounts, two email domains used in the same tenant.

Apx 60 usernames per email domain.
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Pete LongTechnical ConsultantCommented:
Install Azure AD Connect :) Does not have t be on a DC.

Here I'm doing an Exchange emigration but the Azure AD stuff is on there if you dont have an On Premise Exchange :)
Shreedhar EtteCommented:
Please go through this article: https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-install-prerequisites

refer the section: Azure AD Connect server

Pete has already shared nice article for the same.

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RimFire007Author Commented:

To me it seems that there will be a challenge to deal two email domains situation. Can users still login to Outlook using real email address?

Changing Domain Users’ ‘User Logon Names’ and UPN’s
Changing Domain Users’ ‘User Logon Names’ and UPN’s
Well, should I provide both domains there and select user by user the correct UPN Suffix?
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Pete LongTechnical ConsultantCommented:
>>To me it seems that there will be a challenge to deal two email domains situation

How many on premises Exchange organisations? If its only one then thats fine as long as both domains are registered on o365
RimFire007Author Commented:
>>How many on premises Exchange organisations? If its only one then thats fine as long as both domains are registered on o365

Hmm.. actually not sure what "on premises Exchange organisation" means. But all users are sitting in the same office. They utilize the same DC which internal domain name is "MyDomain.local". Half of those has email syntax MyEmailDomain1.com and the other half has email syntax MyEmailDomain2.com. There is no On Premises Exchange Server involved.

All ready run ID Fix and now I'm thinking that there is no problem at all. I just need to provide correct UPN suffix (MyEmailDomain1.com or MyEmailDomain2.com) for all users and I would be good to carry on to next phase. Right?

BTW, isn't it so that I utilize IdFix Tool to edit the UPN Suffix?
Ganesamoorthy STech LeadCommented:
yes you can, just Configure 2 federated domains (MyEmailDomain1.com or MyEmailDomain2.com) on your tenant and Install AADC to sync required objects
RimFire007Author Commented:
Thanks for help. I think I'm good to go.
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