Detect EchoSpoofing and Email Spoofing in Seconds
For email administrators and security analysts: paste raw SMTP logs and instantly surface spoofing red flags like SPF failures, forged HELO names, and unknown senders. Respond to EchoSpoofing-style attacks faster without manual log digging.
Results update live as you type — no button needed. The Example button fills a sample input.
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Why use EchoSpoofing Email Spoofing Analyzer?
Instantly parses SMTP/postfix logs to flag spoofing indicators such as SPF fail, unknown senders, and mismatched HELO domains
Highlights EchoSpoofing patterns where attackers exploit email protection to perfectly spoof trusted domains
Extracts key fields: timestamps, client IPs, from/to addresses, HELO names, and rejection reasons
Runs entirely in your browser — no logs are uploaded or stored
Designed for incident response: quickly triage suspicious connections and rejected recipients
FAQ
What is EchoSpoofing?
EchoSpoofing is an attack technique that abuses email protection services to send perfectly spoofed emails from legitimate domains, bypassing traditional authentication checks. This analyzer helps you spot related patterns in SMTP logs.
What log formats are supported?
The analyzer works best with standard SMTP and postfix log lines that include timestamps, hostnames, client IPs, and status messages such as SPF fail or reject reasons.
Are my logs sent to a server?
No. All parsing happens locally in your browser. Your SMTP logs never leave your device.
Can this tool prevent spoofing?
It is a detection and analysis aid. Use its findings to configure SPF, DKIM, DMARC, and firewall rules to reduce spoofing risk.