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Exchange must not send automated replies to remote domains.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-207318 | EX13-MB-000260 | SV-207318r615936_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. Remote users will not receive automated "Out Of Office" delivery reports. This setting can be used to determine if all the servers in the Organization can send "Out of Office" messages. |
| STIG | Date |
|---|---|
| Microsoft Exchange 2013 Mailbox Server Security Technical Implementation Guide | 2020-12-11 |
Details
| Check Text ( C-7576r393467_chk ) |
|---|
| Note: Automated replies to .MIL or .GOV sites are allowed. Open the Exchange Management Shell and enter the following command: Get-RemoteDomain | Select Name, Identity, AutoReplyEnabled If the value of “AutoReplyEnabled” is set to “True” and is configured to only Reply to .MIL or .GOV sites, this is not a finding. If the value of AutoReplyEnabled is not set to False, this is a finding. |
| Fix Text (F-7576r393468_fix) |
|---|
| Open the Exchange Management Shell and enter the following command: Set-RemoteDomain -Identity <'IdentityName'> -AutoReplyEnabled $false Note: The |