DMARC-SRG review 2026

DMARC-SRG parsed our Microsoft 365 and Google Workspace aggregate files without trouble, then let us filter by the primary domain, marketing subdomain, parked domain, month, and reporting organization. SendGrid and Mailchimp were visible in the authentication rows, but the unknown sender was not classified into a service name, so we used IP range research and message context outside the product. The forwarded mail case, where SPF failed and DKIM survived, was visible as evidence, not converted into a plain next step.

The managed comparison grouped Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender into clearer source records, then kept owner notes with the source. The SPF pass with visible From mismatch generated a specific remediation item instead of sitting as another pass or fail row, and the unknown sender stayed in a review queue until we classified it.

Onboarding the three domains took most of its time outside the UI: database setup, IMAP intake, PHP upload limits, and report cleanup settings. Once reports arrived, finding the unknown sender required moving between filters and raw authentication rows, and explaining the forwarded mail SPF failure to a stakeholder required our own note because the UI did not translate the pattern into a short operational explanation.

The managed comparison reduced the setup work to domain addition, DNS checks, and sender approval review. The unknown sender appeared as a pending source with evidence attached, and the forwarded SPF failure was easier to explain because the surviving DKIM result and forwarding pattern were shown next to the event.

During setup, the DNS handoff stayed internal because DMARC-SRG did not provide a managed checklist for the Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk sender approvals. When the marketing subdomain needed a DKIM review, the product gave us report evidence, but escalation notes, owner assignment, and enterprise onboarding steps had to be maintained outside the tool.

The managed support path was more structured in the baseline: domain setup, DNS record checks, and sender approval evidence were packaged for handoff. The practical difference was the amount of context carried into escalation when a domain owner needed to approve SPF, DKIM, or DMARC policy changes.

DMARC-SRG made sense for our parked domain and a narrow enterprise pattern where raw aggregate reports needed to stay on internal infrastructure. It did not have clean account separation for multiple clients, and domain grouping was basic: the primary domain, marketing subdomain, and parked domain could be filtered, but recurring reporting and client handoff notes were outside the product.

For the managed comparison, the same setup fit SMB and MSP work because account separation, domain grouping, recurring reports, and handoff notes had product-owned places. Enterprise teams still needed internal approval for policy movement, but the workflow made it clearer who owned Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender.