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Exchange auto-forwarding email to remote domains must be disabled or restricted.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-69945 | EX13-MB-000015 | SV-84567r1_rule | Medium |
| Description |
|---|
| Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An attacker might use this information to conduct future attacks. Verify Automatic Forwards to remote domains are disabled, except for enterprise mail that must be restricted to forward-only to .mil and .gov. domains. Before enabling this setting, first configure a remote domain. |
| STIG | Date |
|---|---|
| MS Exchange 2013 Mailbox Server Security Technical Implementation Guide | 2019-01-02 |
Details
| Check Text ( C-70415r1_chk ) |
|---|
| Non-Enterprise Mail Check Content: Open the Exchange Management Shell and enter the following command: Get-RemoteDomain | Select Identity, AutoForwardEnabled If the value of AutoForwardEnabled is not set to False, this is a finding. Enterprise Mail Check Content: If the value of AutoForwardEnabled is set to True, this is not a finding. and In the Exchange Management Shell, enter the following command: Get-RemoteDomain If the value of RemoteDomain is not set to a .mil and/or .gov domain(s), this is a finding. |
| Fix Text (F-76177r1_fix) |
|---|
| Non-Enterprise Mail Fix Text: Open the Exchange Management Shell and enter the following command: Set-RemoteDomain -Identity <'IdentityName'> -AutoForwardEnabled $false Note: The Enterprise Mail Fix Text: New-RemoteDomain -Name Note: NewRemoteDomainName must either be a .mil or .gov domain. Set-RemoteDomain -Identity <'RemoteDomainIdentity'> -AutoForwardEnabled $true Note: The |