SPF Lookup Tool

An SPF Lookup Tool helps you verify the SPF (Sender Policy Framework) record of a domain. SPF records are used to prevent email spoofing by specifying which mail servers are authorized to send emails on behalf of the domain.

The SPF Lookup Tool allows you to ensure that your domain's SPF record is correctly configured. This helps prevent unauthorized users from sending emails using your domain, reducing spam and phishing attacks.

The tool displays the SPF record, along with a breakdown of each part of the SPF record. It also checks for any syntax errors in the record.

If email delivery issues arise due to SPF failures, the tool helps identify any misconfigurations in the SPF record. It can highlight issues such as missing record, syntax errors & invalid configurations.

Yes, our SPF Lookup Tool is completely free and can be used as many times as needed without any limitations.

It's a good practice to check your SPF record whenever you make changes to your mail server infrastructure or DNS settings to ensure continued email deliverability.

The SPF Lookup Tool provides real-time data from DNS servers. The accuracy depends on the current DNS information and the global propagation status of the SPF record.

No, the SPF Lookup Tool currently supports one domain lookup at a time. However, you can run multiple checks in sequence.

Ensure that the DNS records have been updated in your DNS server or DNS management tool you use. DNS records are propagated across the globe to thousands of servers which takes time. So, it's a good idea to wait for sometime and check the SPF record again.

There is no limit to how many times you can use the SPF Lookup Tool. Feel free to perform as many lookups as needed.

An SPF (Sender Policy Framework) record is a DNS TXT record that specifies which mail servers are authorized to send emails on behalf of a domain. When an email is received, the receiving server checks the SPF record to ensure the sender is legitimate.

No, a domain should only have one SPF record. Multiple SPF records can cause email validation failures. However, one SPF record can contain multiple mechanisms to authorize different servers.

If a domain has no SPF record, receiving servers cannot verify the legitimacy of the sender, making the domain more susceptible to spoofing and phishing attacks.

The 'include' mechanism allows you to authorize third-party servers to send emails on behalf of your domain. It points to another domain's SPF record, which is checked in addition to your own.

The 'all' mechanism is used at the end of an SPF record to define how emails from unauthorized servers should be treated. It can be set to '~all' (soft fail), '-all' (hard fail), or '?all' (neutral).

TTL (Time to Live) is the amount of time the SPF record is cached by DNS resolvers before a fresh query is required. Once the TTL expires, DNS will look up the updated record. For most cases, a TTL of 3600 seconds (1 hour) is a good starting point.

Yes, SPF records can contain IP addresses using the 'ip4' or 'ip6' mechanisms to authorize specific servers.

You can update your SPF record through your domain's DNS management platform by adding or modifying the TXT record containing the SPF information.

SPF record changes typically take 24 to 48 hours to propagate globally, depending on the TTL settings and DNS cache. However, you may be able to see the updated value within 5 minutes, depending on which DNS server you query.

Common SPF issues include syntax errors, exceeding the 10 DNS lookup limit, and misconfigured mechanisms.
To troubleshoot:

1. Check Syntax: Ensure the SPF record follows correct syntax and doesn't exceed the 255-character limit.
2. Verify Mechanisms: Make sure all mechanisms, such as 'include', 'ip4', and 'ip6', are valid and correctly configured.
3. Check for Lookup Limits: Ensure that your SPF record doesn't exceed the 10 DNS lookup limit.
4. Use Diagnostic Tools: Use the SPF Lookup tool to detect syntax errors and perform tests on the SPF record.