Delete a custom SMTP connection. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true.
AI agents call delete_smtp_connection to permanently remove resources in TrekMail MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly removes a custom SMTP connection configuration. Deletion of infrastructure settings cannot be reversed without recreating the connection from scratch, making it destructive rather than merely Write. The high severity reflects that misconfiguration or accidental deletion could disrupt email delivery systems for users relying on that SMTP connection.
From the tool's definition Tool name includes 'delete' and description explicitly states 'Delete a custom SMTP connection'. The requirement for TREKMAIL_ALLOW_DESTRUCTIVE=true environment variable confirms this is a destructive operation that cannot be undone.
Attacks that exploit this kind of access
Delete a custom SMTP connection. Requires TREKMAIL_ALLOW_DESTRUCTIVE=true. It is categorised as a Destructive tool in the TrekMail MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the TrekMail MCP Server MCP server in PolicyLayer and add a rule for delete_smtp_connection: 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 TrekMail MCP Server. Nothing to install.
delete_smtp_connection is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_smtp_connection 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.
Set action: deny in the PolicyLayer policy for delete_smtp_connection. 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.
delete_smtp_connection is provided by the TrekMail MCP Server MCP server (trekmail/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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