| name | cis-gworkspace-3.1.3.7.1 |
| description | Ensure comprehensive mail storage is enabled |
| category | cis-gworkspace |
| version | 1.3.0 |
| author | cyberstrike-official |
| tags | ["cis","gcp","google-workspace","gmail","compliance","mail-storage"] |
| cis_id | 3.1.3.7.1 |
| cis_benchmark | CIS Google Workspace Foundations Benchmark v1.3.0 |
| tech_stack | ["gcp","google-workspace"] |
| cwe_ids | [] |
| chains_with | [] |
| prerequisites | [] |
| severity_boost | {} |
Ensure comprehensive mail storage is enabled (Manual)
Description
Comprehensive mail storage ensures messages sent by other core services appear in users' sent folders and are therefore accessible to Vault.
Rationale
As an administrator, you can ensure that a copy of all sent or received messages in your domain--including messages sent or received by non-Gmail mailboxes--is stored in the associated users' Gmail mailboxes.
Impact
There are some important considerations to carefully review before enabling comprehensive mail storage:
- You should not enable comprehensive mail storage if you have compliance routing rules that change the recipient (and don't want the original recipient to receive a copy of the email).
- When you have the SMTP Relay service enabled, user mailboxes will keep a copy of the message in the sent folder (for example, when sending mail from a scanner) if comprehensive mail storage is enabled. This might cause accounts to exceed storage limits if your account's edition has storage limits.
- You should enable comprehensive mail storage if you only use Gmail for the Vault feature and forward email to your on-premise mail server or other email provider.
Audit Procedure
Using Google Workspace Admin Console
- Log in to https://admin.google.com as an administrator
- Select
Apps
- Select
Google Workspace
- Select
Gmail
- Select
Compliance
- Under
Comprehensive mail storage, ensure Ensure that a copy of all sent and received mail is stored in associated users' mailboxes is ON
Expected Result
Ensure that a copy of all sent and received mail is stored in associated users' mailboxes should be ON.
Remediation
Using Google Workspace Admin Console
- Log in to https://admin.google.com as an administrator
- Select
Apps
- Select
Google Workspace
- Select
Gmail
- Select
Compliance
- Select
Comprehensive mail storage
- Set
Ensure that a copy of all sent and received mail is stored in associated users' mailboxes to checked
- Select