Forum Discussion

Copper Contributor

Feb 13, 2020

Office 365 migrations

Hey i'm new to an organisation in wich I have to merge an on prem exchange server 2013 running on win server 2012 with office 365. To make things complicated those on prem users already have an office...

migration

NunoAriasSilva

MVP

Feb 13, 2020

Hi TheOriginalStinger,

If you have no data on those Office 365 accounts, remove them and implement Exchange Hybrid and then migrate.

Best Regards,

Nuno Árias Silva

TheOriginalStinger

Copper Contributor

Feb 13, 2020

Hey Nuno, unfortunatly they already use both accounts, so inbox is used in both on prem and exchange online.

NunoAriasSilva
MVP
Feb 13, 2020
Hi TheOriginalStinger,

Depending on your scenario, you will need to migrate the content using a third-party tool, then you can implement hybrid and use a scenario of soft match to join the user https://support.microsoft.com/en-us/help/2641663/use-smtp-matching-to-match-on-premises-user-accounts-to-office-365.

Best regards,

Nuno Árias Silva
- TheOriginalStinger
  Copper Contributor
  Feb 16, 2020
  NunoAriasSilva hey the users also are in an other domain will that matter. I don't need their domain 2 e-mail adress. It has to merge with the e-mail adress they already have of the principal domain.
  
  Thank you!