Troubleshoot SMTP delivery with DNS and HTTP checks locally using VirtuProbe Studio

This task can be performed using VirtuProbe Studio

Testing workbench with multi-protocol support, chaining, scripting and MCP Server.

Best product for this task

VirtuProbe Studio

dev-tools

Cross-protocol request workbench for integration and penetration testing. 11 protocols, local-first, no account needed. Put your tests together on your own or supervise your agent helping you achieve your goals via MCP. Chain your tests or script your scenarios in JS or Groovy. Free tier covers HTTP, DNS and SMTP testing.

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What to expect from an ideal product

1. Combined DNS, SMTP, and HTTP testing
2. Chained requests with shared outputs
3. Visible SMTP replies and HTTP status codes
4. Local-first operation without an account
5. Scriptable scenarios for repeatable diagnosis

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