AAD Connect sync and Exchange hybrid

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Frequent Contributor

Is Exchange hybrid a pre-requisite for setting up AAD Connect sync? Company migrated to Exchange Online few years ago and there are no Exchange on-premises servers anymore. All users have Exchange online mailboxes and are created as cloud only. Users use different credentials to login to domain joined desktops and to login to Outlook email.

 

Now company wants to setup AAD Connect sync to ensure users use a single ID to login to their domain joined desktops and Office 365. However, would setting up sync now also require setup of Exchange hybrid in order to change mail properties e.g. setting up distribution lists, adding or changing mail alias for user accounts etc.

2 Replies
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Technically no. I currently don’t have one at my org and been running fine. You just have to edit your proxy addresses attribute via advanced properties in users and computers. This allows you to add extra Aliases etc. far as distro etc. those all stay in cloud so no need to manage them onprem at all and can stay in the cloud only.
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@Chris Webb  yes you can do this but it is an unsupported configuration.