Retention Policy for Exchange Mailbox with Auto-Delete
A compliance officer needs to retain all email messages in a user's Exchange Online mailbox for 7 years after the message is sent or received, and then automatically delete them. The retention must be enforced regardless of user actions. Which Microsoft Purview solution should be used?
Quick Answer
The answer is a Microsoft Purview retention policy with the Exchange location. This is correct because a retention policy at the service level enforces the specified 7-year period from when a message is sent or received, and then automatically deletes it, regardless of any user actions like manual deletion or folder moves. For the MS-102 exam, this scenario tests your understanding that Purview retention policies are mandatory and immutable, unlike litigation holds or eDiscovery cases which are user-dependent or manual. A common trap is confusing retention policies with retention labels—labels require user or admin application, while policies apply automatically to the entire mailbox. Remember the key distinction: policies are “set and forget” for an entire location, whereas labels are granular and user-applied. Memory tip: think “Policy = Platform enforced, Label = User applied.”
⚠ Common exam trap
Watch out — candidates often confuse Litigation hold (which preserves indefinitely) with a retention policy (which can both preserve and delete after a set time), leading them to select Litigation hold for time-based deletion scenarios.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Retention policy with Exchange location
A retention policy with the Exchange location in Microsoft Purview allows you to define a retention period (e.g., 7 years) and then automatically delete messages after that period. It enforces the retention regardless of user actions because it operates at the service level, not relying on user cooperation. This meets the compliance officer's requirement for mandatory, time-based retention and deletion.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Litigation hold
Why it's wrong here
Litigation hold preserves all mailbox content indefinitely, it does not delete.
- ✓
Retention policy with Exchange location
Why this is correct
A retention policy can retain and then delete content after a specified period.
- ✗
Classification policy
Why it's wrong here
Classification policies are for applying labels, not for retention or deletion.
- ✗
In-place eDiscovery hold
Why it's wrong here
eDiscovery holds preserve content for legal reasons; they do not delete automatically.
Go deeper
Related to this question
Learn chapter
Microsoft 365 Tenant Setup
Key term
Mailbox
A mailbox is a storage location on a mail server where incoming and outgoing email messages are kept for a user or group.
Key term
Retention policy
A retention policy is a set of rules that determines how long an organization keeps its data and what happens to it when the retention period expires.
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Same concept, more angles
1 more way this is tested on MS-102
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A compliance officer needs to ensure that all emails sent to a specific distribution group are automatically retained for 3 years and then deleted. Which Microsoft Purview feature should be used?
easy- ✓ A.A: Data Lifecycle Management (retention policy)
- B.B: Information Protection (sensitivity labels)
- C.C: Data Loss Prevention (DLP policy)
- D.D: eDiscovery (content search)
Why A: Data Lifecycle Management (retention policies) in Microsoft Purview can be applied to Exchange Online mailboxes. For a distribution group, you can create a retention policy that applies to the mailboxes of the group's members. The policy can be configured to retain items for 3 years and then delete them using the 'Retain for 3 years, then delete' action. This ensures messages sent to the group are retained as part of the members' mailbox content.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-102 exam.