SPF Record Checker - Rocketeers 8" x-data="{ menu: false, scrolled: false }" x-effect="document.body.style.overflow = menu ? 'hidden' : ''">

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 SPF Record Checker 
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 Look up a domain's SPF record and check its syntax, default policy and how many of the 10 allowed DNS lookups it uses — so you catch the PermError limit before it breaks your mail.

Domain  Check SPF record Checking… 

What is an SPF record?
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 SPF (Sender Policy Framework) is a DNS TXT record that lists the servers allowed to send email for your domain. When a receiving mail server gets a message claiming to be from you, it checks this record — if the sending server isn't listed, the message can be marked as spam or rejected. That's what stops attackers from spoofing your domain.

### The 10 DNS lookup limit

 Every include, a, mx, ptr, exists and redirect term forces a DNS query, and includes expand into more queries. RFC 7208 caps the total at 10 — go over and receivers return a PermError, which usually breaks SPF entirely. This checker follows every include recursively so you see the real count.