{"uid":"cap_liaGgtGQ1jPmq_PqGsgaj","slug":"pop3-srv-record-lookup-via-dns-over-https-bb5b531f","name":"POP3 SRV Record Lookup via DNS over HTTPS","description":"POP3 service discovery (_pop3._tcp.<domain>): SRV records with priority, weight, port and target host, from Cloudflare DoH. Tells a client where the domain's pop3 service lives without guessing hosts. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/srv/pop3-tcp?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_CO8eNmzk3USontNgiSa5f","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves _pop3._tcp SRV DNS records for a given domain using Cloudflare DoH, returning priority, weight, port, and target host for the domain's POP3 mail service.","exampleAgentPrompt":"Can you look up the POP3 SRV record for example.com so I know what host and port their incoming mail service is running on?","exampleUseCases":[{"title":"Email client auto-configuration","prompt":"What host and port should my email client connect to for POP3 access on fastmail.com? Look up their _pop3._tcp SRV record."},{"title":"Mail infrastructure audit","prompt":"I'm auditing the mail setup for acmecorp.com — can you pull the POP3 SRV record so I can see what server and port they've configured for POP3?"},{"title":"Validate POP3 service before migration","prompt":"Before I migrate our users, can you check the _pop3._tcp SRV record for oldmailhost.org to confirm the target host and port are still pointing to the right place?"}],"resultDescription":"Returns the SRV record details for _pop3._tcp.<domain> including priority (integer for server selection ordering), weight (load-balancing factor), port number (where POP3 listens), and target hostname, sourced from Cloudflare DNS over HTTPS. If no SRV record exists, returns an empty or error response.","failureModes":["Domain has no _pop3._tcp SRV record — returns empty result or NXDOMAIN","Invalid or malformed domain name input — returns error","Cloudflare DoH upstream timeout — returns service unavailable","Domain exists but POP3 SRV record not published — lookup returns no results","Network failure reaching Cloudflare DoH resolver"],"whenToPreferThis":"Use this endpoint when you need to programmatically discover a domain's POP3 service configuration via DNS SRV records rather than guessing hostnames like 'pop.domain.com' or 'mail.domain.com'. Ideal for email client auto-configuration, infrastructure auditing, or verifying POP3 service endpoints before connecting. Prefer this over generic DNS tools when you specifically need SRV record fields (priority, weight, port, target) for the POP3 protocol.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T18:56:13.583Z","isFirstParty":false,"canonicalSlug":"pop3-srv-record-lookup-via-dns-over-https-bb5b531f"}