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More than one Edge server must be deployed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-259596 | EX19-ED-000109 | SV-259596r942102_rule | Medium |
| Description |
|---|
| To ensure hostile insiders are unable to easily commit DoS attacks and reduce the effectiveness of mail flow throughout the environment, a second Edge server is deployed to allow for multiple paths of mail flow both internally and externally into the environment. This prevents a single point-of-failure and allows for service to continue in the event of a DoS attack targeting one Edge role. |
| STIG | Date |
|---|---|
| Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide | 2024-01-10 |
Details
| Check Text ( C-63335r942100_chk ) |
|---|
| Review the EDSP for current configuration. On the mailbox server, open a PowerShell prompt and run the following command: Get-EdgeSubscription If there is only one subscription on each server, this is a finding. |
| Fix Text (F-63243r942101_fix) |
|---|
| At a minimum, a second server must be deployed and subscribed to. |