A new suite of free diagnostic utilities just dropped, offering developers fast checks across critical infrastructure areas like DNS resolution, email authentication, and basic network topology. These tools aim to simplify troubleshooting configuration headaches that plague modern deployments. Users gain access to granular data without needing complex, proprietary monitoring solutions.

DNS capabilities are extensive, covering standard lookups (A, MX, CNAME) directly from authoritative servers, alongside a global propagation checker querying seven public resolvers simultaneously. Furthermore, the package verifies complex security mechanisms like DNSSEC chains of trust, which is often a manually intensive process for sysadmins needing cryptographic validation.

Network diagnostics include standard Ping and Traceroute, but also deeper checks like an RBL/Blacklist check against over 15 blocklists and an SSL Certificate Checker inspecting chain validity and expiry. For email specifically, the offering features SPF, DKIM, and DMARC validation tools, culminating in a combined Email Health Grade (A–F) report.

Engineers can also generate baseline SPF and DMARC records using integrated generators, moving beyond simple validation to proactive configuration. This collection centralizes many common operational checks, effectively providing a free, comprehensive first-pass security and connectivity audit for any domain or IP address.