smtpbanner

SMTP Banner: SMTP banner & EHLO capabilities (ports 25/587/465)

SERVEROsint Terminal SOURCEhttps://osint-mcp.thetempleofdoom.com/mcp

Low RISK CLASS

Category Read

Parameters 10 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-thetempleofdoom-osint-mcp-osint-terminal/smtpbanner.md

WHAT IT DOES

What smtpbanner does on Osint Terminal

AI agents call smtpbanner to retrieve information from Osint Terminal without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

Parameter	Type	Required	Description
`q`	string	—

Parameters from the server's own tool schema.

RISK

Why smtpbanner is rated Low

Even though smtpbanner only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs smtpbanner safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Osint Terminal, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For smtpbanner, this is the rule to start with:

smtpbanner Allowed

smtpbanner is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "smtpbanner": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Osint Terminal, apply this rule, and every smtpbanner call is checked against it from then on.

FAQ

Questions about smtpbanner

What does the smtpbanner tool do? +

SMTP Banner: SMTP banner & EHLO capabilities (ports 25/587/465). It is categorised as a Read tool in the Osint Terminal MCP Server, which means it retrieves data without modifying state.

What parameters does smtpbanner accept? +

smtpbanner accepts 1 parameter: q. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on smtpbanner? +

Register the Osint Terminal MCP server in PolicyLayer and add a rule for smtpbanner: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Osint Terminal. Nothing to install.

What risk level is smtpbanner? +

smtpbanner is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit smtpbanner? +

Yes. Add a rate_limit block to the smtpbanner rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block smtpbanner completely? +

Set action: deny in the PolicyLayer policy for smtpbanner. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides smtpbanner? +

smtpbanner is provided by the Osint Terminal MCP server (https://osint-mcp.thetempleofdoom.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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