mailgun.net
SPF aligned, DKIM selector mg1
DMARC monitoring without enterprise drag.
Speedmarc turns aggregate DMARC reports into a practical sender inventory, so you can see who sends mail for your domain, review SPF and DKIM alignment, and move toward stronger policy with fewer surprises.
example.com
DNS snapshot captured
Observed volume
8.2k
Senders
18
Auth passing
16
DKIM selectors
7
198.51.100.24
SPF failed, DKIM passed
DMARC aggregate reports
SPF and DKIM alignment
Sender inventory
Policy readiness
Discover
Know who is sending as your domain.
See source IPs, reported sending domains, DKIM selectors, authentication results, and message volume from aggregate reports.
Monitor
Catch new or unexpected mail paths.
Review senders that appear for the first time before they become a delivery, compliance, or spoofing problem.
Improve
Tighten policy with better context.
Use observed DMARC data to clean up stale authorization candidates and prepare changes to SPF, DKIM, and DMARC policy.
Why this is important
Enforce DMARC only after you know what sends mail.
DMARC reports are useful before a domain reaches quarantine or reject. Speedmarc helps you find legitimate services, identify authentication gaps, and spot unfamiliar senders before policy changes affect delivery.
- Review SPF, DKIM, and DMARC alignment by sender.
- Track DKIM selector usage and stale candidates.
- Find services sending email on behalf of your domain.
- Move from monitoring toward enforcement with fewer surprises.