How to relay internal Application to internet via office365 in hybrid migration setup

Question

Hi,

I am planning for migration from the exchange 2016 to office 365. i have about applications that sends emails externally.

how can i relay those emails to use office 365 to send externally in hybrid setup with the decentralized mailflow.

how can i achieve this.

Any suggestions are appreciated.

Thanks
Pavan.

Answer 1

@pavan kumar

Since, you don't enable centralized mail transport, the Exchange online will sent email to the Internet directly. For Exchange on-premises regardless of whether centralized routing is enabled, it always sent email to the Internet directly. So, your hybrid configuration doesn't effect the way of relay email in your organization.

If you want to relay email from Exchange on-premises Exchange, this article will be useful to you create a correct relay connector: How to Configure Exchange Server 2016 for SMTP Application Relay
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

If you want to relay email from Exchange online, this article will be useful to you: How to set up a multifunction device or application to send email using Microsoft 365 or Office 365

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