This is a step by step to how to cofigure office 365 in a hybrid enviromment, with an exchange 2010 on premise single server, once you have your subscription activated,

the first step:

add your domain to office 665 console, you have two options to validate that you are the owner of the domain, adding some dns records is the option prefered:

Be carefully to modify your mx records on the dns server (step 4), because you can lost incoming email messages if you change it  before configuring exchange sevices

The second step:

next step is to execute the Microsoft Office 365 Hybrid Configuration Wizard, first make sure that you have Exchange 2010 SP3 with the latest Rollup #16 , logon on the admin console of 365 (Exchange management console) and download the first link below:

then you download the file Microsoft.Online.CSE.Hybrid.Client.application, but  I was some problems to open from exchange server like this guy says:

https://social.technet.microsoft.com/Forums/lync/en-US/f4ad1393-9032-42f7-b14d-6fdfd1686d27/cannot-run-hybrid-configuration-wizard?forum=Exch2016GD

Important :

You need to have .NET framework 4.6.2, and WINDOWS MANAGEMENT FRAMEWORK 4.0 on the exchange server installed before, this is necessary for next steps,

and follow the  link as say the post:

https://configure.office.com/Scenario.aspx?sid=33

flow the wizard with the correct credentials.

the third step:

The next step is to configure Azure AD Connect this is necessary because the cloud needs to know the email address of the users of the organization and to work properly the  mail flow from the On-Premise server to Office 365  and from Office 365 to O-Premise server.

folow this instructions

the fourth step:

then you have to configure mail flow connectors: on the cloud exchange server and on the on-premises sever

in my case  I was configured the mail flow Cloud to  On-Premise with only IP validation (and not TLS) ,the wizard fails validation, but email flows good 🙂

 

the last step:

finaly you can modify the mx records of your domain as Microsoft shows.

check all the flows:

  • cloud user to on-premise user and to external.
  • on-premise user to cloud user and external.
  • external to on-premise user and to cloud user.

 

 

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