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SPF/DKIM/DMARC test (browser)
Echo Mail (SMTP)
SMTP RCPT
Header analysis
Blacklist check
SMTP diagnostics
DNS
DNS lookup
PTR
Subdomains
AS lookup
Secure DNS
Ping
Traceroute
WHOIS
Domain
IP / RDAP
GeoIP
IP blocks (country)
Certificates
TLS at endpoint
Analyze PEM
Convert formats
Generate (OpenSSL)
Tools
Base64
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Port check
Public IP
Format code
Docker ↔ Compose
Mail tools
SMTP, header, and blacklist tools plus Echo Mail — same as the home dashboard.
SPF/DKIM/DMARC test
One-shot address · browser
SMTP RCPT
MX · RCPT · 587/465
Header analysis
Fields & hints
Blacklist check
DNSBL/RHSBL
SMTP diagnostics
TLS, relay
Echo Mail (SMTP)
Classic flow
Result