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Exchange Plan 1 and Encryption

Anonymous
2016-07-18T18:48:31+00:00

A user only licensed with Exchange Plan 1 is able to send encrypted emails.  I'm trying to figure out how this is possible.  My understanding is the user mush have IRM license or E3 and higher.  I do have a mix of Plan 1 and E3s.  However, the user it's working for has Plan 1 only.  Is this a recent change Microsoft has done?  The encryption is being applied via a transport rule and the user is using Outlook to send the message to an external user.

Microsoft 365 and Office | Subscription, account, billing | For home | Windows

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  1. Anonymous
    2016-07-18T20:21:22+00:00

    Hi OKFIT,

    Once IRM is enabled, it is for the whole tenant, not for specific users.

    Since IRM uses Active Directory Rights Management Services, to enable IRM for the tenant, you must have a plan includes an Azure Rights Management subscription.

    As you have Office 365 Enterprises E3 plan which includes an Azure Rights Management subscription and already enabled IRM for the tenant, the user licensed with Exchange Online Plan 1 can send encrypted emails.

    To avoid this situation, you can modify the conditions of the transport rule.

    Thanks,

    Franky

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  1. Anonymous
    2016-07-18T20:57:32+00:00

    I could not locate this information anywhere else.  Thank you for clarifying.

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