Domain scan
See your domain the way a mail server sees it.
One lookup reads every record together, follows each SPF include, and names the services authorised to send as you. Free, no account, nothing stored.
Try
Read in this scan
- Identity
- SPF · DKIM · DMARC · BIMI
- Delivery
- MX · A/AAAA · PTR
- Transport
- MTA-STS · TLS-RPT · STARTTLS
- Foundation
- DNSSEC · CAA · NS/SOA
A scan cannot tell you who has been sending
This is a photograph of your DNS this second. Who actually sent as you, from where, and whether it passed only arrives in aggregate reports, over days, from the mailbox providers themselves.
Start monitoring, free for one domain →Using custom DKIM selectors?
Providers publish recommended selectors but nobody is obliged to use them. If the documented defaults are not found, that is a question rather than a failure. Open Using custom DKIM selectors? above and yours will be checked alongside them.