Header Analyzer
Analyze relay delays, SPF/DKIM posture, and SMTP header integrity.
Paste SMTP Headers
Paste full headers from the message source. Analysis runs domain-scoped and stored headers auto-delete after 30 days.
Parsing headers and resolving DNS records...
Healthy
Subject: —
Total Delay: —
Hops: 0
Relay Servers
Hop processing delay across each SMTP relay.
| Hop | Server | Delay | Timestamp |
|---|---|---|---|
| No relay data. | |||
SPF + DKIM
Authentication results and DNS policy validation.
SPF
unknown
DKIM
unknown
DMARC
unknown
Authentication Issues
What we detected
Header Listing
| Header Name | Header Value |
|---|---|
| No headers loaded. | |