Exchange Online Mailboxes
Microsoft Exchange Online is a SaaS application that is bundled in your Microsoft 365 subscription service. It is a hosted messaging solution that delivers the capabilities of Microsoft Exchange Server as a cloud-based service. It gives users access to email, calendar, contacts, and tasks from PCs, the web, and mobile devices. Using the policy-based data protection solution from Cohesity DataProtect as a Service, you can protect Exchange Online data on Microsoft 365.
This topic covers the following:
Considerations
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PST download is supported only for mailbox items and not entire mailboxes.
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The exported PST of the mailbox items is valid for 72 hours. Ensure that you download the PST file within 72 hours of the recovery task completion.
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PST recovery of emails with more than 2000 recipients is not supported.
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Backup and download of the following is not supported:
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Self-message (messages sent to self)
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Saved or pinned messages property in the conversation
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Meeting recordings metadata from private chats
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In Recoverable Items,
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only deletions, Purges, Discovery Holds, and SubstrateHolds folders are currently supported.
SubstrateHolds folders support is a Private Preview feature. Private Preview was termed as Early Access in the earlier releases. Contact your Cohesity account team to enable the feature.
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Audits, Calendar Logging, and Versions folders are not supported.
This is a Private Preview feature. Private Preview was termed as Early Access in the earlier releases. Contact your Cohesity account team to enable the feature.
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Granular recovery and search is not supported for Recoverable Items. The admin must recover the complete mailbox to recover the Recoverable Items.
This is a Private Preview feature. Private Preview was termed as Early Access in the earlier releases. Contact your Cohesity account team to enable the feature.
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Converted-shared mailboxes are not backed up by default. To enable backup of converted-shared mailboxes, contact Cohesity Support.
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The Retirement of RBAC Application Impersonation in Exchange Online does not impact the Microsoft 365 Exchange Online Mailboxes, Teams, and Groups protection workflow on the Cohesity cluster.
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Exchange Online Mailboxes protection is supported only for users present on Azure AD and not for users on the on-premises Active Directory.
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Exchange Online Mailboxes protection is supported for:
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users present in Azure AD
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hybrid setup with users present on Azure AD
It is not supported for:
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users on the on-premises Active Directory
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users natively on the on-premises Active Directory that are synchronized to Azure AD.
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By default, the Conversation History/Team Chat folder is excluded during Exchange Online backup.
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Following the Microsoft changes for EWS APIs, Cohesity no longer backs up mailbox items of the type IPM.Teams.SkypeMessage. For more details, see the KB Article.
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Microsoft 365 Backup Storage service is supported for Mailboxes.
This is a Private Preview feature. Private Preview was termed as Early Access in the earlier releases. Contact your Cohesity account team to enable the feature.