Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.4 )

In script version 1.3 we began the introduction of logic that allowed administrators to convert the distribution group to a mail enabled contact post migration.  It was extremely simplistic in that the function utilized retained as many attributes of the distribution list, deleted the distribution list, and created a mail enabled contact utilizing the retained…

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Office 365: Tracking last run times of the managed folder assistance / exchange life cycle.

In Office 365 the managed folder assistance is responsible for applying data retention policies to mailbox items.  For example, if you have a policy to purge items older that 90 days from deleted items – the managed folder assistant will process this information. A question that sometimes arises is how can I track the last…

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Office 365: Dynamic distribution lists created by email domains.

Dynamic distribution lists offer excellent mechanisms to email groups of users based on their attribute rather than maintaining manual group membership.  One request I often receive is how can we create a distribution list for everyone that has their primary SMTP address within a certain domain. By their initial design a dynamic distribution list supports…

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Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.1 )

=========================================================================================== Group Migration Script v1.1 –> https://github.com/timmcmic/DLConversion/blob/master/src/DLConversion.ps1 =========================================================================================== In script version 1.1 we introduced a new feature to control how the group is provisioned in Office 365.  When a group is create on-premises the group type can be established as either distribution or security.  The group type can be dynamically changed through Active Directory Users…

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Office 365: Challenges with Distribution Groups for Migrated Mailboxes and a Script Based Solution ( Script Version 1.0 )

=========================================================================================== Group Migration Script v1.0 –> https://github.com/timmcmic/DLConversion/blob/master/src/DLConversion.ps1 =========================================================================================== Distribution groups are an excellent way to organize multiple recipients under a single address.  Like Exchange Server on-premises, Office 365 supports mail-enabled distribution groups, security groups, and dynamic distribution groups.  When Active Directory and Exchange are used on-premises, distribution groups are typically created in the on-premises Active…

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Office 365: Stale Information in the Offline Address Book and Individual Contact Cards

In Office 365 an Exchange related object can be replicated from the on premises Active Directory to Azure Active Directory and then forward synchronized into the Exchange Online Active Directory.  In most cases the objects synchronized into the Exchange Online Active Directory represent mail enabled objects.  User accounts are unique in that they are replicated…

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Office 365: A different approach to handling Office 365 group mail flow…

In Exchange Online an Office 365 Group ( Unified Group / Modern Group ) allows for a new level of team collaboration.  Office 365 Groups are created directly in Exchange Online and Azure Active Directory.  This makes them cloud only objects.  The membership and attributes of these objects are maintained directly in Office 365. There…

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Office 365: Unable to modify group membership in the Office 365 portal…

In Office 365 cloud only groups can have their membership managed through the Office 365 portal or through the Azure Active Directory powershell commands.  As with on premises Active Directory multiple group types can be created and managed.  You can also create direct user membership in groups as well as nested group membership.  I recently…

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Office 365: Correcting users who have had a mailbox in the cloud and on-premises…

In some previous blog posts I have outlined conditions where users may have inadvertently had a mailbox both on premises and in the cloud at the same time.  The following links outline these scenarios and how to attempt to proactively identity users that may fall in this condition. https://blogs.technet.microsoft.com/timmcmic/2018/04/10/office-365-detecting-and-preventing-duplicate-mailboxes-between-on-premises-and-exchange-online/ https://blogs.technet.microsoft.com/timmcmic/2017/09/10/office-365-users-have-both-a-cloud-and-on-premises-mailbox/ https://blogs.technet.microsoft.com/timmcmic/2018/04/09/office-365-licensing-mail-users-results-in-mailbox-objects/ With an understanding of…

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Office 365: Exchange Migrations and the data migrated information…

In Office 365 migration batches are the preferred method of establishing mailbox migrations to Office 365.  When a migration batch is established the users included in the batch are represented as migration users within the service.  Within the context of each migration user is where we track the migration process.  One of the data points…

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