domain-infrastructure SKILL.md skillA
domain-infrastructure from leadmagic/gtm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add leadmagic/gtm-skills/domain-infrastructure@v1.0.0Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- leadmagic/gtm-skills
- Path
skills/outbound/domain-infrastructure/SKILL.md- Versions recorded
- 6
- Latest version
- v1.0.0, committed Oct 1, 2026
- First version recorded
- Jun 8, 2026
- Size
- 22,338 bytes
- Repository stars
- 76
- License
- MIT
Designs and provisions the domain and mailbox infrastructure for cold email outreach: secondary domains, mailbox setup (Google Workspace, M365, Zoho), DNS authentication records, inbox rotation, and primary domain isolation. Use when the user asks to set up sending domains, provision mailboxes, configure DNS for cold email, or plan domain rotation for outbound. Activates on phrases like "set up sending domains," "buy secondary domains," "provision mailboxes…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Domain Infrastructure ## Overview Cold email deliverability depends entirely on infrastructure decisions made before the first email is sent. The domain names, mailbox providers, DNS configuration, and rotation strategy form the foundation on which all outbound rests. A poor infrastructure setup will produce poor deliverability regardless of copy quality or targeting precision. This skill produces a complete domain infrastructure plan: which secondary domains to register, how to provision mailboxes across providers (Google Workspace, Microsoft 365, Zoho), DNS authentication configuration for each domain, inbox rotation schedules, and a monitoring framework to detect degradation before it impacts campaigns. The non-obvious rule: never send cold email from your primary business domain. Your primary domain carries your transactional email (password resets, invoices, customer notifications, support tickets) and your corporate email (sales, support, executives). A reputation hit on the primary domain from cold email complaints or bounces takes down ALL of those functions simultaneously. Cold email must operate on entirely separate, isolated infrastructure. ## When to Use …
Read the whole file at its exact version.
How to install
mdr add leadmagic/gtm-skills/domain-infrastructure@sha256:b9a6ced6ea905c31The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zqjrzyvuem5qndbs)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 6 versions of this file, between Jun 8, 2026 and Oct 1, 2026, about one every 23 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0.0 latest | 2026-10-01 | ca0d2ec | 22,338 B | A | view · diff |
| v1.0.0 | 2026-09-02 | a19750a | 22,391 B | A | view · diff |
| v1.0.0 | 2026-06-10 | e030e67 | 22,385 B | A | view · diff |
| v1.0.0 | 2026-06-10 | 17b6e1f | 22,309 B | A | view · diff |
| v1.0.0 | 2026-06-10 | 9f00d65 | 22,310 B | A | view · diff |
| v1.0.0 | 2026-06-08 | 07ce0cd | 21,290 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (22338 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
leadmagic/gtm-skills · 76 stars · license MIT · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zqjrzyvuem5qndbs GET https://markdownregistry.com/api/v1/resolve?ref=leadmagic/gtm-skills/domain-infrastructure GET https://markdownregistry.com/api/v1/blob/b9a6ced6ea905c31854aa8df135ca33dad7a45a622c12f0a490f9369658ec10f
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.