{"apiVersion":"v1","directorySlug":"scan-mcp-caf0a4a43e","title":"SPF, DKIM and DMARC Checker for Email Authentication","description":"Free email authentication scanner, no key or signup. Checks SPF, DKIM, DMARC, MX, DNSSEC, blacklists and runs a live SMTP probe on any domain.","pageUrl":"https://www.mcpbundles.com/skills/scan-mcp-caf0a4a43e","connectPath":"importable","connectAction":"import_server","catalogListing":false,"bundleSlug":null,"listingKind":"remote_mcp","kind":"provider","transportUrl":"https://api.scan.mx/mcp","hostedMcpUrl":null,"toolCount":6,"toolInventoryStatus":"observed","refreshedAt":"2026-11-03T13:26:00.516172+00:00","registryName":"mx.scan/scan-mcp-caf0a4a43e","registryVersion":"2026.11.3","registryEligible":true,"tools":[{"name":"check_domain","description":"Run the full email and DNS deliverability check for a domain: MX, SPF, DKIM, DMARC, DNS health, provider detection, and blacklists. Returns a letter grade (A+ to F, where specific weaknesses cap the grade), a 0 to 100 score, and every individual check with its RFC reference. Set include_smtp to also run a live SMTP probe of the mail servers: the probe is non-blocking, so when smtp_status is \"pending\" or \"running\" call this tool again (poll_after_seconds hints how long to wait) until smtp_status","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1},"include_smtp":{"type":"boolean","default":false}}},"title":"Full email deliverability check","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_domain","displayName":"Full email deliverability check"},{"name":"check_mx","description":"Check the MX records of a domain: presence, hostnames, resolution, null-MX, and common misconfigurations.","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1}}},"title":"Check MX records","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_mx","displayName":"Check MX records"},{"name":"check_spf","description":"Check the domain SPF policy: presence, syntax, the all qualifier, and the 10-lookup limit.","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1}}},"title":"Check SPF","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_spf","displayName":"Check SPF"},{"name":"check_dmarc","description":"Check the domain DMARC policy at _dmarc: presence, policy strength (none/quarantine/reject), and reporting.","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1}}},"title":"Check DMARC","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_dmarc","displayName":"Check DMARC"},{"name":"check_blacklist","description":"Check whether the domain and its mail server IPs are listed on the Spamhaus (ZEN, DBL, ZRD, AuthBL), SpamCop, GBUdb and PSBL blocklists.","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1}}},"title":"Check blacklists","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_blacklist","displayName":"Check blacklists"},{"name":"check_dkim","description":"Check DKIM signing keys for a domain. Without a selector, common provider selectors are probed. Pass an explicit selector to look up that exact key at selector._domainkey.","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["domain"],"properties":{"domain":{"type":"string","maxLength":253,"minLength":1},"selector":{"type":"string","pattern":"^[a-z0-9_.-]+$","maxLength":63}}},"title":"Check DKIM","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"check_dkim","displayName":"Check DKIM"}],"toolSource":"directory_preview","agentAction":"both","installLinks":[{"id":"cursor","label":"Cursor","href":"cursor://anysphere.cursor-deeplink/mcp/install?name=SPF-DKIM-and-DMARC-Checker-for-Email-Authentication&config=eyJ1cmwiOiAiaHR0cHM6Ly9hcGkuc2Nhbi5teC9tY3AifQ%3D%3D"},{"id":"vscode","label":"VS Code","href":"vscode:mcp/install?%7B%22name%22%3A%22SPF-DKIM-and-DMARC-Checker-for-Email-Authentication%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fapi.scan.mx%2Fmcp%22%7D"},{"id":"vscode-insiders","label":"VS Code Insiders","href":"vscode-insiders:mcp/install?%7B%22name%22%3A%22SPF-DKIM-and-DMARC-Checker-for-Email-Authentication%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fapi.scan.mx%2Fmcp%22%7D"},{"id":"claude-web","label":"Claude.ai","href":"https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=SPF%2C+DKIM+and+DMARC+Checker+for+Email+Authentication&connectorUrl=https%3A%2F%2Fapi.scan.mx%2Fmcp"},{"id":"codex","label":"Codex","copyText":"codex mcp add \"SPF-DKIM-and-DMARC-Checker-for-Email-Authentication\" --url \"https://api.scan.mx/mcp\""},{"id":"chatgpt","label":"ChatGPT","href":"https://www.mcpbundles.com/docs/integrations/chatgpt"}],"catalogUrl":"https://www.mcpbundles.com/api/directory/v1/servers/scan-mcp-caf0a4a43e","callUrl":"https://www.mcpbundles.com/api/directory/v1/servers/scan-mcp-caf0a4a43e/tools/{tool}","mcpServerUrl":"https://api.scan.mx/mcp","liveCatalogUrl":"https://www.mcpbundles.com/api/directory/v1/servers/scan-mcp-caf0a4a43e?live=1"}