IP e rede

Verificação de SPF

Análise do registro SPF do domínio: mecanismos, includes, política.

Fatos principais

Check a domain's SPF record online: enter the domain and see the v=spf1 record, a breakdown of mechanisms (include, ip4, mx and others), the all policy and warnings. Free, no sign-up. The 10-DNS-lookup limit is counted only on the top-level record, and nested includes are not expanded.

Preço
Grátis
Cadastro
Não é necessário
Processamento
On our server: we query the domain's TXT records in DNS and parse the first v=spf1 record; nested includes are not expanded
Entrada
A domain (for example example.com) or a site address
Limites
30 checks per minute per IP; no sign-up; only mechanisms of the top-level record are counted, nested includes and redirect are not expanded
Resultado
The SPF record text, a table of mechanisms (qualifier, type, value), the all policy, the number of mechanisms causing DNS lookups, warnings (over 10 lookups, +all, ?all) and a 0–100 score
Última atualização

Código aberto no GitHub

Execute a mesma verificação na sua própria máquina: uma ferramenta de linha de comando em Node.js, uma biblioteca e uma GitHub Action. Código aberto sob a licença MIT.

ksanyok/spf-checker

Verificação do registro SPF

Verifique o registro SPF (Sender Policy Framework) de um domínio. Um SPF correto evita a falsificação de endereços de e-mail do seu domínio.

Análise do registro SPF
Verificação de mecanismos (include, ip4, a, mx)
Contagem de consultas DNS (limite de 10)

Como usar

  1. Digite um nome de domínio para analisar o registro SPF
  2. A ferramenta vai extrair o registro SPF do DNS e analisar todos os mecanismos
  3. Revise a lista de servidores autorizados e a quantidade de consultas DNS

FAQ

Enter the domain and click Check SPF. The tool requests the TXT records, finds the v=spf1 record and shows the mechanisms, the all policy, the number of DNS lookups and warnings. No sign-up; the limit is 30 checks per minute.

The domain's TXT records contain no string beginning with v=spf1. Either SPF is not set up, or the record sits on another (sub)domain. For a domain you send mail from, add SPF.

-all (fail) asks the receiver to reject mail from unlisted sources, ~all (softfail) to mark it as suspicious, ?all (neutral) requires nothing, and +all allows everyone. Use -all or ~all to protect against spoofing.

Under RFC 7208, SPF evaluation may perform no more than 10 lookups for include, a, mx, ptr, exists and the redirect modifier. Exceeding it gives a permerror and mail may be rejected. Our tool counts only mechanisms of the top-level record; nested includes are not expanded.

SPF is only one of the checks. Deliverability also depends on DKIM, DMARC, domain and IP reputation and the message content. Check DKIM and DMARC on the neighbouring pages and make sure the domain in the email matches the one you tested.

No. Two v=spf1 records on one domain cause a permerror. Merge them into one with several includes. Our tool shows only the first record it finds and does not warn about a duplicate.

PromoPilot vs. alternativas: comparação

Comparamos apenas o que está confirmado nas páginas de cada serviço. Onde não conseguimos confirmar um dado, a célula mostra "—".

Parâmetro PromoPilot MXToolbox SPF Record Check dmarcian SPF Surveyor EasyDMARC SPF Record Checker
Grátis e limites Yes: 30 checks per minute, no sign-up — Listed under “Free DMARC Tools”; the page notes maintenance A free tool; limits not stated
Record syntax check Partly: mechanisms and the all policy ✓ diagnostic tests for errors ✓ errors and syntax problems with suggested fixes ✓ syntax, IP addresses, TXT records
Expansion of nested includes ✗ — An expandable tree of DNS queries per mechanism ✓ SPF lookup trees; checks for the “10 DNS lookup” error
Listing of third-party senders ✗ — ✓ third-party senders and IPs ✓ sending sources
DKIM and DMARC next to it ✓ separate pages with links — — —

Role a tabela para os lados

Onde somos mais fracos: we do not expand nested includes and redirect, so the DNS lookup counter is understated, we do not detect a duplicate SPF record, and there is no list of third-party senders or history.

Quando escolher o PromoPilot: When you want a quick look at a domain's SPF record, its policy and obvious problems (+all, ?all, many includes). If the record chains includes of large services and you need an exact lookup count under RFC 7208, use an analyzer that expands nested records.

Verificado em: . "—" significa que não foi confirmado na página oficial; condições e preços mudam, então confira os sites dos próprios serviços.

Promoção com links em cascata para o seu site Bônus de $30Backlinks 5→50→5000 em mais de 100 plataformas. A partir de $30 para começar, mais um bônus de $30 para novos usuários.