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Remote Domain Settings

The question it answers: What may leave the organisation automatically per remote domain - forwarding, out-of-office replies, delivery reports?

Remote domains decide what may leave the organisation automatically: forwarded mail, out-of-office replies, delivery reports and meeting-forward notices. Automatic forwarding must be blocked in both the outbound spam policy (see EOP & Defender posture) and the remote domain ’*’.

Where in the appExchange Online › Mail Security & Hygiene › Remote Domain Settings
WorkloadExchange Online
KindFindings list · dashboard tile
DataRead from Microsoft 365 when someone first opens it, then kept for the report cache lifetime (Settings > Data & cache, 1 hour unless changed). It reads through PowerShell (Exchange Online or SharePoint Online), so the first load takes longer than a Graph report.
LicenceNo extra licence needed.
Report id (API and MCP)exchange.hygiene.remote-domains
ColumnKeyType
SeveritySeverityStatus
Setting areaCategoryText
Remote domainSubjectLink
SettingSettingText
ValueValueText
FindingFindingText
Remote domain nameDetailText
DateWhenDate
CountNumberNumber

A findings list hides columns that no row fills. Severity is Critical, Serious, Warning, OK or Info; rows rated Critical, Serious or Warning need attention (Working with findings).

Licence: No extra licence needed.

Application permissions on the IntensiveReports app registration (all permissions):

PermissionAPIWhat it allowsNote
Exchange.ManageAsAppOffice 365 Exchange OnlineManage Exchange As Application+ View-Only Configuration
Data sources it reads
  • Get-RemoteDomain
GET /ir-api/v1/reports/exchange.hygiene.remote-domains?size=100

An AI assistant reads it with the MCP tool get_report and the id exchange.hygiene.remote-domains. The client needs the Read grant for Exchange Online. See Using the API.