DMARC-SRG vs.
Docker DMARC Reports in 2026

In DMARC-SRG, we separated Microsoft 365 and Google Workspace traffic by reporter, then filtered SendGrid and Mailchimp results by domain and month. The aligned DKIM pass on the marketing subdomain remained visible even when the SPF identity did not align, which helped us explain the Mailchimp visible from mismatch. The unknown sender still appeared as IP and authentication evidence rather than a named service, so we had to research and label it outside the product.

Docker DMARC Reports collected the same Microsoft 365, Google Workspace, SendGrid, and Mailchimp aggregate reports through its IMAP schedule and displayed the core SPF, DKIM, and disposition data. We could see that forwarded mail failed SPF while DKIM preserved the DMARC pass, but the viewer did not explain forwarding or propose a fix. The unknown sender also needed manual classification, and we found fewer review shortcuts when moving between the three domains.

We spent about two hours and 35 minutes configuring DMARC-SRG, MariaDB, IMAP ingestion, the web UI, and access controls for the three test domains. Once reports arrived, switching between the corporate domain, marketing subdomain, and parked domain was direct. Finding the unknown sender took several filters and external ownership research, while explaining the forwarded SPF failure required us to compare SPF and DKIM details ourselves.

We spent about one hour and 25 minutes preparing the Docker DMARC Reports container, database variables, IMAP folders, and private reverse proxy. Adding all three domains did not require separate paid entitlements, but the viewer offered little onboarding guidance after ingestion began. We found the unknown sender in the raw source rows, then reconstructed the forwarded-mail explanation outside the product because no workflow connected SPF failure, aligned DKIM, and forwarding.

During DMARC-SRG setup, the public documentation helped us connect the database, mailbox ingestion, and report cleanup settings. We still wrote our own DNS change ticket, rollback notes, and explanation for the support desk sender. When we simulated an escalation around incomplete IMAP ingestion, our route was project documentation and community issue handling, with no vendor SLA or enterprise onboarding contact.

Docker DMARC Reports documented the key environment variables well enough for our container operator to connect IMAP and MariaDB. The DNS handoff, TLS termination, backup plan, and viewer access policy were entirely our responsibility. Our simulated parser escalation had no commercial support path, and an enterprise rollout would need internal owners for patching, incident response, and DMARC policy decisions.

DMARC-SRG worked best when we treated the corporate domain, marketing subdomain, and parked domain as one internal analysis set. Its filters helped our enterprise-style review, but it did not give us separate client accounts, delegated permissions, or an MSP handoff record. We could generate period summaries, yet turning them into recurring owner reports and tracking policy approvals remained our process.

Docker DMARC Reports made sense for an SMB with container skills and a modest number of domains. We could group data in one deployment, but proper client separation required separate stacks, databases, access rules, and reporting routines. That made MSP handoff expensive in staff time, and the absence of routed alerts meant each client would depend on scheduled manual review.