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Multple O365 tenants send as 1 domain RRS feed

  • Question

  • Case question:

    Domain1.com (onpremise E2010)

    Domain2.com (office365) 

    Domain3.com  (office365)

    Company is in a merge, so new domain will be setup.

    domain4.com (no mail server yet, only MXRecord, which will talk to: Domain1.com mailserver, becuase that is where most of the users mailboxes are. We dont have time to migrate everything to one email server yet.

    How can I make sure that both domain2/domain3 will be able so SEND AS domain1.com

    I know that this setup is by default not possible, because only 1 Office365 tenant is able to send as domain1.com not 2.

    Is there a way we can still do this? from the backside of the Office365 platform, as master admins? domain2 and domain3.com send as newcompany.com  

    thx

    Rob


    Monday, December 3, 2018 1:03 PM