Generate and validate DNS records for free to prevent email spoofing and ensure secure email delivery.
SPF (Sender Policy Framework) records are DNS records that specify which mail servers can send emails on behalf of your domain. This prevents email spoofing and ensures your emails are less likely to be marked as spam.
MX Layer’s SPF Generator tool lets you input your domain name and specify which IP addresses or third-party services can send emails from your domain. The generator then produces the correct SPF record, which you add to your DNS settings.
Using MX Layer’s SPF Record Generator Tool simplifies managing your domain's email security. Manually creating SPF records can be error-prone, especially if you’re unfamiliar with the syntax and requirements. The generator facilitates this process, reducing the risk of errors and ensuring the records are correctly formatted. It also speeds up the process, saving you time. Properly setting up SPF records helps improve email deliverability and prevent email spoofing. Regularly reviewing and updating your SPF records keeps them effective and accurate.
Gather IP Addresses: Make a list of IP addresses you trust for sending emails. Others will fail checks. Find out which sources send emails to your domain. Note their IPs or domains.
Define SPF Policy: Choose the SPF version and decide what to do with failed checks. Then:
a. Enter your domain and trusted IP addresses.
b. Access your ISP's DNS control panel.
c. Start with "v=spf1".
Publish Record: Put the SPF record in your DNS settings.
Test SPF Record:
a. After publishing, test it to ensure it works.
b. Use the command prompt or MX toolbox.
| Q-Syntax | Result Code | Description |
|---|---|---|
| + | Pass | Authorizes the definition of sending servers; This is a standard, so if no qualifier is specified, it is assumed as +. |
| - | Fail | Relevant error is returned if mail is sent from unauthorized IP or sources. |
| ~ | SoftFail | Unauthorized sending servers may be defined. However, the recipient should consciously address this error. |
| ? | Neutral | The sending server ensures that no comments regarding legitimacy are made in channels where it defines the mail to be accepted. |
| Mechanism | Description |
|---|---|
| All | Always |
| A | The queried (or explicitly stated) domain has an MX record or MX IP address. |
| mx | The queried (or explicitly stated) domain has an MX record or MX IP address. |
| ip4 | The specified IPv4 address is the sender's IP address, or the specified IPv4 subnet includes it. |
| ip6 | The specified IPv6 address is the sender's IP address, or the specified IPv6 subnet includes it. |
| redirect | Another domain's SPF record legitimizes the sender's IP address. |
| include | An additional SPF request for the domain specified in the "include" statement includes the sender's IP address. |
| exists | The sender's IP address is authorized based on the client's connection or other criteria as per RFC7208. |