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DirSync is out of support, you have to use AADconnect.<br />
You would have to merge some of the accounts:<br />
<a href="https://docs.microsoft.com/en-us/azure/active-directory/connect/active-directory-aadconnect-existing-tenant" rel="ugc">https://docs.microsoft.com/en-us/azure/active-directory/connect/active-directory-aadconnect-existing-tenant</a>
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First upgrade to Azure AD connect. &nbsp;Follow my article:<br />
<a href="https://www.experts-exchange.com/articles/29342/In-place-Upgrading-Dirsync-to-Azure-AD-Connect.html" rel="ugc">https://www.experts-exchange.com/articles/29342/In-place-Upgrading-Dirsync-to-Azure-AD-Connect.html</a>
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It´s is AD Azure Connect that i use. Wxcuse my bad choise of word. <br />
<br />
Currently no identities is synced. This is the first time i experience this problem. Currently troubleshooting.
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Thank you all for you time. :)<br />
<br />
Yes it´s the primary SMTP and because i scoped it with a group for pilot testing then i did not work untill i removed the group option.
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Hi guys <br />
<br />
In one of the companies that we manage we are almost ready to begin Hybrid Exchange configuration. Now before i have installed the Dirsync i learn that all the company users has already been created in the O365 tenant. Reason being that they wanted to take advantage of the Office product that they already pay for. Fair Enough. <br />
<br />
Now i cant remember, what happens when i do the sync. if the alias is not the same then i have dual identity. But if the users data are in fact the same what happens ? <br />
<br />
Now i will do the id fix test, and set my sync point to an out with a test user that i have created on-prem and in cloud for this purpose to see what happens. And the work from there. <br />
<br />
But still i would like your input :)
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Hi guys 

In one of the companies that we manage we are almost ready to begin Hybrid Exchange configuration. Now before i have installed the Dirsync i learn that all the company users has already been created in the O365 tenant. Reason being that they wanted to take advantage of the Office product that they already pay for. Fair Enough. 

Now i cant remember, what happens when i do the sync. if the alias is not the same then i have dual identity. But if the users data are in fact the same what happens ? 

Now i will do the id fix test, and set my sync point to an out with a test user that i have created on-prem and in cloud for this purpose to see what happens. And the work from there. 

But still i would like your input :)

Dirsync

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.