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Afaik this is not supported. You can use a dynamic distribution group instead and/or hide the DG in the GAL.
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Afaik this is not supported. You can use a dynamic distribution group instead and/or hide the DG in the GAL.

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Then why did you close the question? &nbsp;You should have responded to our suggestions so could help you get the answers you need.<br />
<br />
Jeff
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Then why did you close the question?  You should have responded to our suggestions so could help you get the answers you need.

Jeff

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Is there a way to prevent users (internal) seeing members of a distribution group when the people send mails to it.
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Is there a way to prevent users (internal) seeing members of a distribution group when the people send mails to it.

Distribution members visible on Office 365, how to change

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.