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DNS SRV Record Lookup for Email Submission (Implicit TLS)
x402
DNS SRV Record Lookup for Email Submission (Implicit TLS) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).
Looks up SRV records at _submissions._tcp.{hostname} for locating implicit TLS email submission servers for a given registrable domain.
Price / call$0.01
Success—
StatusUnknown
How this service works
Call when an agent needs SRV records at _submissions._tcp.{hostname} for implicit TLS submission. The caller sends the registrable domain, not the underscored name. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/dns-srv-submissions first.
Output
Returns SRV record data for _submissions._tcp.{hostname}, including the target host, port, priority, and weight for the implicit TLS email submission server associated with the given domain.
Example use cases
Email client auto-configuration
“I'm building an email client and need to auto-configure the submission server for users at company.org — can you fetch the _submissions._tcp SRV record for company.org so I know which host and port to use for implicit TLS?”
Mail server diagnostic check
“Something is wrong with our outbound email for acme.com — can you pull the DNS SRV record for implicit TLS submission on acme.com so I can see what submission server is configured?”
Validating third-party domain mail routing
“We're onboarding a partner at partnerfirm.net and need to verify their implicit TLS submission setup — can you resolve the _submissions._tcp SRV record for partnerfirm.net?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/dns-srv-submissions?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to discover the implicit TLS (port 465-style) email submission server for a domain via DNS SRV service records, specifically querying _submissions._tcp. Prefer the free sandbox alternative (POST /v1/sandbox/dns-srv-submissions) for testing. Choose this over generic DNS lookup tools when the target record type is specifically the email submission SRV record.
Side effects
- Domain not found or no SRV record exists at _submissions._tcp.{hostname} — returns empty or NXDOMAIN result
- Invalid hostname format — returns validation error
- DNS resolution timeout — service may return an error or timeout response
- Hostname exceeds 253 characters — rejected by input validation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| hostname | string | Public DNS hostname such as example.com. Not a URL, not an IP literal, and not a private name. |
Tags
x402
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