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Ralf Vanderheijden's avatar
Ralf Vanderheijden
Copper Contributor
Apr 07, 2018

Admin center - Multiple small businesses can see each other

Hi,

 

Does anyone have a good solution to managing multiple small businesses with Office 365/Exchange 365 accounts? I provide IT services to a number of small businesses, all unrelated and I am responsible for over 6 separate instances of Office 365 (mostly Exchange, a couple also have sharepoint) for clients.

 

The problem is that all my customers from different businesses, can see each others email in their contacts, outlook web app and more..

 

How do I prevent this? Am I suppose to create a new @mycompany.onmicrosoft.com for every client/company?

 

I've been searching this problem for weeks but can't seem to figure it out.

Good help would be very much appreciated!

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