Microsoft 365 Administration Lab

Shared Mailboxes, SharePoint
& Resource Mailboxes

End-to-end configuration of collaborative email infrastructure, SharePoint team sites with permission tiers, and room resource mailboxes — simulating a real-world IT department environment on a live M365 tenant.

PlatformMicrosoft 365 / Exchange Online
TenantIntelX800.onmicrosoft.com
CompletedMay 2026
LevelIntermediate

Skills Demonstrated

Shared Mailboxes Exchange Admin Center Outlook Web Access Multi-account Management SharePoint Online Site Permissions Document Libraries Folder-level Access Control External Sharing Resource Mailboxes Room Booking Calendar Management
1

Shared Mailbox — Support HelpDesk

Microsoft 365 Admin Center → Teams & Groups → Shared mailboxes

Created and configured a shared mailbox at support@anish.website to simulate a real IT support team inbox. Added David Wilson and Sarah Smith as members, then validated end-to-end functionality — sending emails from the shared address and confirming receipt in a user inbox — all without requiring a dedicated licence for the mailbox itself.

📬
Shared Mailbox Created

support@anish.website provisioned in Microsoft 365 Admin Center under Shared mailboxes.

👥
Members Added

David Wilson and Sarah Smith granted Send As and full access permissions to the mailbox.

✉️
Send & Receive Tested

Test email sent from support@anish.website via Sarah Smith's account; received in David Wilson's inbox.

🔄
Multi-account Access

Opened shared mailbox inside Outlook alongside personal account — demonstrated parallel mailbox management.

📋
Sent Items Verified

Confirmed sent email appears in Support HelpDesk Sent Items folder, not the sender's personal account.

🏷️
No Licence Required

Shared mailbox operates without an assigned licence — cost-efficient for team email scenarios.

Screenshots — Shared Mailbox Setup & Testing

Shared mailbox created in Microsoft 365 Admin Center
Created ✓

Shared mailbox "Support HelpDesk" (support@anish.website) successfully created — M365 Admin Center confirms creation with next steps to add members

Shared mailbox members — David Wilson and Sarah Smith added
Saved ✓

David Wilson and Sarah Smith added as shared mailbox members — both can send and receive on behalf of support@anish.website

Support HelpDesk Sent Items — test email stored in shared mailbox
Sent From

Support HelpDesk Sent Items showing the test email to David Wilson — stored in the shared mailbox, not in the sender's personal account

David Wilson inbox — received email from Support HelpDesk
Received ✓

David Wilson's inbox confirms receipt of the test email from Support HelpDesk — end-to-end shared mailbox flow validated

David Wilson Outlook — multiple linked accounts visible
Multi-account

David Wilson's Outlook showing multiple linked accounts — demonstrates real-world multi-tenant identity management in a single client

Key Takeaway — Shared Mailboxes


2

Resource Mailbox — Room Booking

Exchange Admin Center → Recipients → Resources

Created a Room resource mailbox (Board Room) via the Exchange Admin Center to enable calendar-based meeting room bookings. Configured auto-accept booking options, then tested the full workflow — booking the room from David Wilson's Outlook calendar and verifying the room's acceptance confirmation reply.

🏢
Room Resource Created

Board Room mailbox (boardroom@anish.website) provisioned in Exchange Admin Center with booking options configured.

📅
Calendar Booking Tested

Created a "Team Meeting" event from David Wilson's Outlook calendar, inviting the Board Room as a resource.

Auto-Accept Confirmed

Board Room sent an automatic acceptance reply — David Wilson's calendar updated with confirmed room booking.

Screenshots — Resource Mailbox & Room Booking

Exchange Admin Center — resource mailbox creation successful
Created ✓

Exchange Admin Center confirms "Resource mailbox creation successful!" after completing all four setup steps: Resource Setup, General Information, Booking options, and Review

Outlook calendar — new Team Meeting event with Board Room resource
Booking

New event created with Board Room (boardroom@anish.website) added as a resource — availability shows as "Available" for the 7:00–7:30 PM slot

David Wilson inbox — Board Room accepted the Team Meeting booking
Accepted ✓

David Wilson's inbox shows "Board Room accepted" — the Team Meeting is confirmed on both the user's calendar and the room's calendar for Wed 27 May, 7:00–7:30 PM

Key Takeaway — Resource Mailboxes


3

SharePoint Site — IT Team Department

SharePoint Admin Center → Active sites → IT Internal Department

Provisioned a private SharePoint team site ("IT Internal Department") for the IT team's internal file storage. Configured a three-tier permission model (Members, Owners, Visitors), created a confidential document library folder with unique restricted permissions, uploaded an IT policy document, and tested external document sharing — all through SharePoint's modern permission management interface.

🌐
Site Provisioned

IT Internal Department SharePoint site created as a private group from SharePoint Admin Center.

🔐
Permission Groups Configured

Three-tier model: Members (Edit), Owners (Full Control), Visitors (Read) applied at the site level.

📁
Confidential Folder Created

"Confidential – HR only" folder created with unique permissions breaking inheritance from the site.

📄
Document Uploaded

IT policy.docx uploaded to the Documents library and made available to site members.

🔗
External Sharing Tested

IT policy.docx shared with an external Gmail account — sharing invitation confirmed.

👤
Member Management

Users assigned to SharePoint groups (Sarah Smith as Member, David Wilson as Visitor) via the Permissions panel.

Screenshots — SharePoint Site & Permission Configuration

SharePoint Admin Center — IT Internal Department site details
Provisioned ✓

SharePoint Admin Center showing IT Internal Department site details — private group with primary email ITInternalDepartment@anish.website, created 27 May 2026

SharePoint site permissions — Members, Owners, Visitors groups
Permissions

Classic SharePoint site permissions page showing three groups: IT Team Department Members (Edit), IT Team Department Owners (Full Control), IT Team Department Visitors (Read)

SharePoint People and Groups — IT Team Department Owners
Groups

Classic SharePoint People and Groups view showing IT Team Department Owners group — demonstrating the three-group structure (Members, Visitors, Owners) in the left navigation

SharePoint Documents library — Confidential HR only folder
Restricted

SharePoint Documents library showing the "Confidential – HR only" folder created inside the IT Team Department site

SharePoint Documents library with Confidential HR folder and permissions panel open
Permissions

Documents library with the Permissions panel open — Sarah Smith (Edit) and David Wilson (Read) assigned, confirming the three-tier access model applied at site level

SharePoint folder unique permissions — broken inheritance
Unique Permissions

Confidential folder shows "This folder has unique permissions" — inheritance broken from the parent site, applying a separate access control list for HR-sensitive content

SharePoint — IT policy.docx shared with external Gmail account
Shared ✓

IT policy.docx shared externally — confirmation dialog shows anishhgirii@gmail.com has been invited to view the document, demonstrating SharePoint's external sharing capability

Key Takeaway — SharePoint Permissions & Document Management