Cluster 3

Network, DNS, and Email Infrastructure

Practical checks for the infrastructure layer that most sites depend on but rarely audit — email deliverability, DNS configuration, Cloudflare health, VLAN segmentation, and WordPress SMTP routing.

Who this is for

Site operators, small business admins, WordPress developers, and anyone troubleshooting email or network configuration problems.

Who uses these tools

Site operators, small business admins, WordPress developers, and anyone troubleshooting email or network configuration problems.

Problems these tools address

  • Email landing in spam or failing to deliver without any error message
  • Cloudflare or DNS settings that look correct but are causing subtle issues
  • A flat home or office network with no separation between trusted and untrusted devices
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Email Deliverability Full-Stack Auditor

Audits the full email deliverability stack for a domain — SPF, DKIM, DMARC, MX configuration, and common routing weaknesses — and returns a plain-language summary of what is working and what needs to be fixed.

Business owners, developers, and site admins whose domain sends transactional or marketing email and who need to understand why messages are landing in spam or failing to deliver.

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Cloudflare Configuration Health Checker

Uses publicly visible signals to identify Cloudflare configuration patterns that often look correct on the surface but silently weaken security, performance, or SSL handling.

Site owners and developers who have Cloudflare in front of their site but have never fully reviewed the configuration or are experiencing unexplained performance or SSL issues.

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Home Network VLAN Segmentation Planner

Creates a practical VLAN layout for your home or small office network — separating trusted devices, guest access, IoT hardware, and lab equipment into distinct segments with appropriate firewall boundaries.

Home network owners and small office admins who want better security through network segmentation but are not sure where to start or whether their hardware supports it.

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WordPress SMTP and Email Routing Debugger

Diagnoses why WordPress-originated email is failing or landing in spam by walking through the most common SMTP configuration, plugin, and routing problems — so you know exactly where to look and what to change.

WordPress site owners, WooCommerce store managers, and developers troubleshooting lost order confirmations, contact form failures, password reset emails, or unreliable transactional mail.

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