You can grant (or revoke) O365 administration roles to (or from) an existing Azure guest user in the Azure Properties > O365 Admin Roles tab. This is typically required either when the assignment of a guest user changes, or when it is finished.
To configure the O365 admin roles of an existing Azure guest user
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On the Active Roles Web Interface, navigate to Directory Management > Tree View > Azure > <azure-tenant> > Azure Guest Users.
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From the list in the middle pane, select the Azure guest user that you want to update.
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To open the properties of the selected Azure guest user, click Azure Properties on the right pane.
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To open the administration role settings, click the O365 Admin Roles tab.
Figure 47: Directory Management > Tree View > Azure > <azure-tenant> > Azure Guest Users > <azure-guest-user> > Azure Properties > O365 Admin Roles — Accessing the administrator role settings of an Azure Guest user
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Select the administrator role(s) you want to grant for the guest user, or deselect the role(s) you want to revoke.
NOTE: You can assign roles to the Azure guest user in Active Roles without any limitation. However, One Identity recommends that you assign Azure guest users only the admin roles that external contractors typically receive in your organization.
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To apply your changes, click Save.
You can create, modify or view the Exchange Online properties of an existing Azure guest user with the Exchange Online option of the Active Roles Web Interface. With the Exchange Online properties, you can configure various mailbox-related settings for the guest user, such as:
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The name of the email address.
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Message size and delivery rules.
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Setting up the guest user mailbox as a shared mailbox.
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Enabling or disabling various applications (such as Outlook Web App) or protocols (such as MAPI, IMAP4, or POP3) for the mailbox.
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Configuring Messaging Records Management (MRM) settings for the guest user mailbox.
To view and update the Exchange Online properties of an Azure guest user
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Navigate to Directory Management > Tree > Azure > <azure-tenant-name> > Azure Guest Users.
The list of Azure guest users of the selected tenant is displayed.
Figure 48: Directory Management > Tree View > Azure > <azure-tenant-name> > Azure Guest Users — Listing the Azure guest users in the tenant
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Select the guest user whose Exchange Online properties you want to check or update.
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To access the Exchange Online-specific mailbox settings, click Exchange Online Properties.
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In the available Exchange Online Properties tabs, configure the Exchange Online mailbox settings as you need.
Table 4: Available Exchange Online properties
| Mail Flow Settings |
View and configure rules for the emails that the mailbox sends or receives via the Exchange Online service. |
| Delegation |
Configure the email account as a shared mailbox. |
| General |
View and configure the email addresses associated with the mailbox. |
| Mailbox Features |
View and configure various Exchange Online mailbox features, for example mobile access, additional mailbox protocols, or archival settings. |
| Mailbox Settings |
View and configure Messaging Records Management (MRM) settings for the mailbox. |
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To apply your changes, click Close.
You can set up rules for the emails that Exchange Online mailboxes send or receive in the organization with the Exchange Online Properties > Mail Flow Settings tab of the Active Roles Web Interface. Active Roles supports setting up two types of rules:
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Message size settings, specifying the size of the emails that the guest user can send or receive.
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Email delivery and forwarding settings, allowing the guest user to send emails on behalf of a specified group, or have their received emails automatically forwarded to an additional specified address.
Such mail flow settings are typically configured if the organization enforces specific email messaging policies for users and guest users.
NOTE: You can configure the Exchange Online properties for both hybrid users and cloud-only users. The process is identical for both types of users, but you can access them from different locations under the Console tree in the Active Roles Web Interface.
To configure the mail flow settings for an Exchange Online mailbox
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In the Active Roles Web Interface, choose if you want to configure the settings for cloud-only Azure users or hybrid Azure users:
- To configure mail flow settings for hybrid Azure users, navigate to Directory Management > Tree View > Active Directory, and select the Organizational Unit (OU) of the hybrid user that you want to modify.
- To configure mail flow settings for cloud-only Azure users (or Azure guest users), navigate to Directory Management > Tree View > Azure > <azure-tenant> > Azure Users (or Azure Guest Users).
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From the list in the middle pane, select the hybrid Azure user, cloud-only Azure user or Azure guest user that you want to update.
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To open the Exchange Online properties of the selected user, click Exchange Online Properties on the right pane.
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To open the mail flow settings, click the Mail Flow Settings tab.
Figure 6: Exchange Online Properties > Mail Flow Settings — Configuring the message size and forwarding settings of an Exchange Online mailbox
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Select Message Size Restrictions, and click Properties.
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Configure the size of the emails (in KB) that are sent or received by the mailbox. By default, both the Sending message size and the Receiving message size settings use the default limit of the Azure tenant.
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To apply your changes and close the Message Size Restrictions dialog, click Save.
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Select Delivery Options, and click Properties to configure the following email delivery and forwarding settings.
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Send on behalf: When configured, the mailbox can send emails on behalf of the specified mailbox or group.
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Forwarding address: When configured, the emails received by the mailbox are always forwarded to the specified email address.
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None: No forwarding address is set.
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Forward to: You can either enter the address manually, or click the Browse from domain button.
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To deliver messages to both the forwarding address and the mailbox, select the corresponding check box.
IMPORTANT: Consider the following when selecting the Forward to field:
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If you are configuring mail flow settings for a hybrid user, use the email address that is hosted on Azure AD instead of the on-premises email address.
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If you click Browse from domain, you can only select the same type of user that you are currently configuring. For example, if you configure a hybrid user, you can only select hybrid user addresses.
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One Identity does not recommend specifying a cloud-only forwarding address for a hybrid user. This is because in addition to Azure users, hybrid users also exist as on-premises users within Active Roles. If you want to forward emails to cloud-only addresses, configure mail flow settings for cloud-only users instead.
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To apply any changes you made in the Delivery Options dialog, click Save.
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To close the Exchange Online Properties window, click Close.
You can set up an Exchange Online mailbox as a shared mailbox in the Exchange Online Properties > Delegation tab of the Active Roles Web Interface. This is typically performed if the configured email account is used as a group account, such a common support or information email address.
The Active Roles Web Interface supports granting Send as and Full access permissions to the specified users and guest users. For more information on shared mailboxes and these permissions, see Shared mailboxes in Exchange Online in the Microsoft Exchange documentation.
NOTE: You can configure the Exchange Online properties for both hybrid users and cloud-only users. The process is identical for both types of users, but you can access them from different locations under the Console tree in the Active Roles Web Interface.
To configure the email delegation settings of an Exchange Online mailbox
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In the Active Roles Web Interface, choose if you want to configure the settings for cloud-only Azure users or hybrid Azure users:
- To configure mail flow settings for hybrid Azure users, navigate to Directory Management > Tree View > Active Directory, and select the Organizational Unit (OU) of the hybrid user that you want to modify.
- To configure mail flow settings for cloud-only Azure users (or Azure guest users), navigate to Directory Management > Tree View > Azure > <azure-tenant> > Azure Users (or Azure Guest Users).
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From the list in the middle pane, select the hybrid Azure user, cloud-only Azure user or Azure guest user that you want to update.
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To open the Exchange Online properties of the selected user, click Exchange Online Properties on the right pane.
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To open the delegation settings, click the Delegation tab.
Figure 7: Exchange Online Properties > Delegation — Accessing the email account delegation settings of an Exchange Online mailbox
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To delegate Send as permission to a single user or multiple users, click Add under the Send As list.
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Select the user that you want to grant Send as rights for the email address, then click OK.
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To delegate Full Access permission to a single user or multiple users click Add... under the Full Access list.
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Select the user that you want to grant Full Access rights for the email address, then click OK.
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To remove a delegated user either from the Send As or Full Access list, click Remove and select the user that you want to revoke the permission from.
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To apply your changes, click Save, then Close.
