The Agent Skills Directory

[SAFE]: The skill is a collection of best practices and diagnostic tools for email infrastructure auditing. It does not perform any invasive or dangerous operations.
[SAFE]: The included shell scripts (dns-audit.sh and smtp-tls-check.sh) use standard system utilities (dig and openssl) to perform read-only checks of public DNS records and STARTTLS support. All shell variables are properly quoted to prevent command injection.
[SAFE]: All external references target official documentation from trusted providers such as Google, Microsoft, Yahoo, and the IETF (RFC editor). These are well-known, safe domains.
[SAFE]: No prompt injection attempts, credential theft, or unauthorized data exfiltration patterns were detected in the instructions or scripts.

email-deliverability