Tools
Analyze email headers
Inspect SPF, DKIM, and DMARC results, identify the sending IP, confirm reverse DNS, and trace the delivery path.
- Authentication View reported authentication details
- DMARC View DMARC details
- Reverse DNS View reverse DNS details
- Transport View delivery route details
Message details
Decoded identity and message fields found in the submitted headers.
Reported authentication
Results reported by receiving servers in Authentication-Results and ARC headers.
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Reported authentication
Results reported by receiving servers in Authentication-Results and ARC headers.
Sender and reverse DNS
The likely sending address, its autonomous system, PTR hostnames, and domain alignment inputs.
Delivery route
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| From | Received by | Protocol | TLS | Time |
|---|
Original Received chain
Details to review
Identity mismatches, header-quality findings, and authentication warnings.
View all parsed headers
What the parser checks
- Authentication
- SPF, DKIM, and DMARC verdicts, published records, and strict or relaxed domain alignment.
- Sending infrastructure
- The likely sender IP, PTR records, forward-confirmed reverse DNS, and transport encryption.
- Header quality
- Sender identity mismatches, ARC structure, spam signals, mailing-list metadata, and malformed headers.