Quickstart
Get oriented quickly. Find the right section for your use case — whether you want to use our tools, our mail forwarding service, or self-host the entire stack.
Choose Your Path
Use OSINT Tools
Install and run Go-based CLI tools for DNS intelligence, breach exposure, WHOIS, and more.
Use Mail Forwarding
Create free email aliases on forward.haltman.io — no account required, just confirm via email.
Self-Host the Stack
Deploy the full mail forwarding infrastructure on your own server with Postfix, MariaDB, and more.
Open Source Tools — Quick Install
All tools require Go 1.22+. Install any tool with a single command:
Reverse DNS, subdomain, and CNAME lookups on 5.14B+ domains. No API key needed.
go install github.com/haltman-io/ip-thc/cmd/ip-thc@latest
ip-thc -rdns -t 1.1.1.1
ip-thc -sub -t example.com --all
ip-thc -cn -t github.io
Breach and infostealer exposure statistics. No API key needed.
go install github.com/haltman-io/search-leaks/cmd/search-leaks@latest
search-leaks -t example.com
search-leaks -t user@example.com
Reverse WHOIS enumeration. Requires WhoisXML API key.
go install github.com/haltman-io/reverse-whois/cmd/reverse-whois@latest
reverse-whois --api-key YOUR_KEY -t example.com
Domain and subdomain discovery with wildcard filters. Requires WhoisXML API key.
go install github.com/haltman-io/sub-alter/cmd/sub-alter@latest
sub-alter --api-key YOUR_KEY -di "*example.com*"
URL extraction from Brave Search results. Requires Brave API key.
go install github.com/haltman-io/brave-search/cmd/brave-search@latest
brave-search -ak "YOUR_KEY" -sq "site:example.com" --all
Mail Forwarding — Quick Start
Create a free email alias in seconds at forward.haltman.io:
Choose your alias
Pick a handle, select a domain, and enter your destination email address.
Confirm via email
Check your inbox for a confirmation link (anti-abuse measure).
Start receiving
Emails sent to your alias are forwarded to your real inbox immediately.
Or use the API directly via cURL:
curl 'https://mail.haltman.io/forward/subscribe?name=myalias&domain=fwd.haltman.io&to=you%40email.com'
Self-Hosting — Overview
The full stack consists of these components, deployed in order:
| # | Component | Role |
|---|---|---|
| 1 | MariaDB | Domain and alias lookup backend |
| 2 | DNS | MX, SPF, DMARC, PTR records |
| 3 | PostSRSd | Sender Rewriting Scheme (SPF alignment) |
| 4 | Postfix | SMTP engine and policy enforcement |
| 5 | OpenDKIM | DKIM signing (optional, recommended) |
| 6 | mail-forwarding-api | Node.js API for alias management |
| 7 | mail-forwarding-ui | Next.js frontend |
Start with the mail-forwarding-core guide — it covers components 1–5 in a single document.
Community & Support
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