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Velký výběr krémů, pudrů, bb a cc krémů s spf až 90. Pro krásné a bezpečné opalování
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SPF Checker - Home
Check your domain's SPF record with SPF checker tool. Ensure your emails reach the recipient's inbox by implementing correct SPF record.
What is the SPF record?
TAG TAG Description v (required) The version tag. The only allowed value is “spf1”. If it’s incorrect or the tag is missing, the SPF record will be ignored. ip4 This tag should include all the IPv4 addresses that are allowed to send emails on behalf of the domain. ip6 This tag should include all the IPv6 addresses that are allowed to send emails on behalf of the domain. a The A record tag allows the SPF to validate the sender by domain name’s IP address. If left unspecified, it takes the value of the current domain. mx The MX record tag checks the MX record of the mail server(s). If left unspecified, it takes the value of the current domain. ptr (Not recommended) The PTR record tag checks the PTR record of the mail server(s). If left unspecified, it takes the value of the current domain. exists The exists tag checks if an A record exists or not on the mentioned domain. include The include tag is of top importance for a correct SPF record. Listing all your sending sources under this tag lets the recipient know that you verify all the added domains/subdomains as legitimate sources. all (required) All is a required tag. It should be placed at the end of the SPF record. Depending on the qualifiers used (~, +, -,?), this mechanism indicates how the recipient should treat emails from non-authorized sources.Examples of common SPF records
Here are some examples of common SPF records:1. A basic SPF record that allows the domain’s MX (mail exchange) servers to send email:
v=spf1 mx ~all
This record indicates that any server listed in the domain’s MX records is authorized to send email on behalf of the domain.The tilde (~) indicates that the domain’s owner requests that messages that fail SPF checks be marked as a soft fail.
2.An SPF record that allows a specific IP address to send email:
v=spf1 ip4:192.0.2.0/24 ~all
This record allows any server with an IP address in the range 192.0.2.0 to 192.0.2.255 to send email on behalf of the domain. The CIDR notation (/24) indicates the range of IP addresses that are allowed. The tilde (~) again indicates a soft fail.
3. An SPF record that allows multiple sources to send email:
4. v=spf1 a:example.com include:_spf.google.com ~all
This record allows any server listed in the domain’s A record (example.com) and any server authorized by the SPF record for _spf.google.com to send email on behalf of the domain. The include mechanism allows the domain owner to reference another domain’s SPF record. The tilde (~) again indicates a soft fail.
5. An SPF record that specifies a hard fail:
6. v=spf1 a:example.com -all
This record allows any server listed in the domain’s A record (example.com) to send email on behalf of the domain. The minus (-) before the all mechanism indicates that any server that fails SPF checks should be treated as a hard fail, which means that the message should be rejected.
Why is SPF important?
You should use the SPF for 4 main reasons.1. To improve your domain security. SPF helps to prevent spoofing (email fraud and spoofing). By defining which sending sources (IP addresses, servies, domains) are authorized to send email on behalf of a domain, an organization can prevent cybercriminals from sending phishing emails (fraudulent or spoofed email) from the organization’s domain.
2. To improve Email Deliverability. By using SPF, an organization can improve its email deliverability. by ensuring that its legitimate email messages are not marked as spam or rejected by recipient email servers.
3. To protect domain reputation. When a domain is used to send spam or fraudulent email messages, its reputation can be damaged. This can result in legitimate email messages being marked as spam or rejected by email servers. SPF helps to ensure that its legitimate email messages are not affected by the actions of malicious actors.
4. Compliance: In some cases, organizations are required to use SPF in order to comply with regulations or industry standards. For example, the Payment Card Industry Data Security Standard (PCI DSS), GDPR, SOC2 requires that organizations use SPF to protect against email fraud and spoofing. SPF checker can help easily find the issues.
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