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Multiple Domains

DMARC Dashboard monitors as many domains as you like. The Setup Wizard configures the first domain; you add the rest under Settings -> Mailbox Monitoring.

How multi-domain works​

  • Each domain is its own mailbox source. A source is one domain plus the credentials (Graph or IMAP) for the mailbox that receives that domain's reports. Each domain can use a different provider.
  • One global poll interval. There is a single interval setting that applies to every mailbox. You do not schedule domains individually.
  • All mailboxes are polled concurrently. On each tick the scheduler polls every active source at the same time. One slow or broken mailbox never blocks the others; its error is recorded against that source and shown in Settings.
  • Dashboards stay aggregate. The dashboards combine data across all domains, with a domain filter. The per-report domain comes from the report XML itself, so a single mailbox can even serve several domains.

Add a domain​

  1. Go to Settings -> Mailbox Monitoring.
  2. Click the Add domain button. It reveals a form for a new mailbox source.
  3. Enter the domain, choose the provider (Microsoft 365 / Graph or IMAP), and enter its credentials. See Microsoft 365 or IMAP.
  4. Use Test connection to confirm the credentials reach the mailbox.
  5. Save. The new source joins the next poll cycle.

Per-mailbox status​

Settings -> Mailbox Monitoring shows each source's last poll result: when it last ran, whether it succeeded, and the error detail if it failed. Use this to spot a domain whose credentials have expired (for example, an expired Graph client secret or a revoked App Password).

Switch or remove a domain​

  • Change credentials or provider: edit the source in place and re-test.
  • Remove a domain: delete its source. The historical reports already ingested for that domain remain in the dashboards; only future polling stops.
tip

Point each domain's DMARC rua= at the correct mailbox before relying on its dashboard. Reports flow only after the DNS change propagates, and aggregate reports arrive about once per day per reporter.