Why choose a Exchange Hybrid?

Why choose a Exchange Hybrid?

Why a Exchange Hybrid?

  • A Hybrid Exchange environment allows you to take your local environment and the cloud environment together as a single mail organisation.
  • This is practical because the management is on-premise (Active Directory) and the mailbox management can easily be done via a hybrid environment towards Office 365 Exchange Online.
  • Hybrid = Recipient management on-premise, ACL (rights) on-line.

The main advantages of a Hybrid Exchange

  • Hybrid exchange enables secure email routing between your local and Exchange Online organisations. This is not easy with an SMTP gateway.
  • Administrators can use powerful and familiar Exchange management tools to move users to Exchange Online and manage users.
  • Printers using the Exchange environment today continue to relay in exactly the same way as before.
  • Hybrid Exchange is a requirement to migrate as easily as possible without user impact and reconfiguration of each device. With a hybrid migration, only a username & password need be entered after the mailbox move.

Why not choose a hybrid Exchange?

  • If you want to migrate quickly to Exchange Online .
  • If Security is highly regarded in your organisation.
  • If you have no knowledge of Exchange.

Don't you want a Hybrid Exchange?

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1. Adjust your mail flow

  • Migrate all mail flow from on-premise to Office 365. So all scanners, copiers, applications dedicated to Office 365.

2. Send your mail via SMTP authentication (recommended)

  • You want to send email from a third-party hosted application, service or device.
  • You want to send e-mail to people inside and outside your organisation.
  • Let your device authenticate directly to the Office 365 mailbox and send out your mails via SMTP auth submission.
  • Benefit: Total control of the mail flow & insight into the mailbox.
  • Disadvantage: There is a licence for each user mailbox.
Application or printer settingsValue
Server/smart hostsmtp.office365.com
PortPort 587 (recommended) or port 25
E-mail address and passworduse your mailbox login
Shows how a multifunction printer connects to Office 365 using SMTP client submission.

There are also 2 other methods, which are only recommended if the above options are not sufficient.

  • Option 2: Send your mails directly to O365 over port 25.
  • It is best to take this option only if option 1 is not possible.
  • Option 3: Configure a connector to send mail to Office 365. (relay)
  • It is best to take this option only if options 1 and 2 are not possible.
  • Technical content & configuration can be read here!

3. Decrease your Hybrid Exchange

  • Remove the roles from your Exchange servers so that there are no longer any active roles.
  • Remember that if you just break down your Exchange and use Azure AD connect in Hybrid Mode you always have to manually put e-mail addresses, policies, and so on on the AD objects. This takes a lot more time and does not guarantee typing errors, etc.
  • Be sure to read https://365tips.be/2020/02/16/waarom-kiezen-voor-een-exchange-hybrid

4. Recommended Exchange Hybrid only management, no hybrid mailflow.

  • If you still want to do the administration, you can install a Exchange 2016 server with a free licence. (For Exchange)
  • The key can be obtained at: https://aka.ms/hybridkey
  • Unfortunately, this is not (yet) the case for Exchange 2019. It is 2016.


Welcome to 365tips.be. On this website you can read articles and experiences about Office 365 with focus on Microsoft Teams. Feel free to ask me a question and I will answer it in a blog post. Help others by giving feedback at the bottom of the articles. This blog is made in Dutch. The multilingual website is offered with best-effort machine translation.
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2 months ago

Quels sont les champs administrables depuis l'exchange On premise et pas administrable depuis l'exchange Online ?

Would love to know your thoughts, please leave a comment.x
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