Live DNS & email auth checks
Maintain this server? Claim it
Call this server's tools from your browser. Nothing to install.
Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.
Tool list from our last check. Connect live to refresh it.
Use this when the user wants an email DNS check, a DMARC checker, an SPF record checker, a DKIM checker, or an MX lookup for a domain. Reads the live public DNS records through DNS-over-HTTPS and returns MX hosts, the SPF record with its DNS-lookup count against the limit of 10, the DMARC policy, reporting and alignment, DKIM keys for the selectors you give, and a pass/warn/fail findings list with a fix and a CSV report. Do not use for internal DNS server visibility, full deliverability tests, or reading or sending mail.
The domain to check, without http or a path, e.g. example.com.
Up to 5 DKIM selector names to test, e.g. ["mail", "selector1"]. Ask the mail provider or check the DKIM signature header if the selector is unknown.
Use this when the user wants an email DNS check, a DMARC checker, an SPF record checker, a DKIM checker, or an MX lookup for a domain. Reads the live public DNS records through DNS-over-HTTPS and returns MX hosts, the SPF record with its DNS-lookup count against the limit of 10, the DMARC policy, reporting and alignment, DKIM keys for the selectors you give, and a pass/warn/fail findings list with a fix and a CSV report. Do not use for internal DNS server visibility, full deliverability tests, or reading or sending mail.
| Argument | Type | Description |
|---|---|---|
| domain* | string | The domain to check, without http or a path, e.g. example.com. |
| dkim_selectors | array | Up to 5 DKIM selector names to test, e.g. ["mail", "selector1"]. Ask the mail provider or check the DKIM signature header if the selector is unknown. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"domain"
],
"properties": {
"domain": {
"type": "string",
"maxLength": 253,
"minLength": 1,
"description": "The domain to check, without http or a path, e.g. example.com."
},
"dkim_selectors": {
"type": "array",
"items": {
"type": "string",
"maxLength": 63,
"minLength": 1
},
"maxItems": 5,
"description": "Up to 5 DKIM selector names to test, e.g. [\"mail\", \"selector1\"]. Ask the mail provider or check the DKIM signature header if the selector is unknown."
}
}
}Use this when the user wants a dns lookup, an mx record check, or a txt record lookup for a domain. Reads live public DNS records through DNS-over-HTTPS and returns A, AAAA, MX, NS, TXT, CNAME, CAA, and SOA records with their TTLs, plus a CSV report. Do not use for internal DNS server visibility, reverse DNS of an IP address, or records outside the supported type list.
| Argument | Type | Description |
|---|---|---|
| types | array | Record types to return, a subset of A, AAAA, MX, NS, TXT, CNAME, CAA, SOA, e.g. ["MX", "TXT"]. Omit for A, AAAA, MX, NS, TXT, CNAME, CAA, and SOA. |
| domain* | string | The domain to look up, e.g. example.com or mail.example.com. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"domain"
],
"properties": {
"types": {
"type": "array",
"items": {
"enum": [
"A",
"AAAA",
"MX",
"NS",
"TXT",
"CNAME",
"CAA",
"SOA"
],
"type": "string"
},
"description": "Record types to return, a subset of A, AAAA, MX, NS, TXT, CNAME, CAA, SOA, e.g. [\"MX\", \"TXT\"]. Omit for A, AAAA, MX, NS, TXT, CNAME, CAA, and SOA."
},
"domain": {
"type": "string",
"maxLength": 253,
"minLength": 1,
"description": "The domain to look up, e.g. example.com or mail.example.com."
}
}
}