cPanel’s Authentication interface allows you to enable or disable Domain Keys Identified Mail (DKIM) and Sender Policy Framework (SPF). These features provide information about incoming mail. The system uses this information to verify that a trusted sender sent the messages.
1 – Open cPanel (yourdomain/cpanel).
2 – Click on (Authentication) from Email section.
DKIM verifies the sender and integrity of a message. It allows an email system to prove that spammers did not alter an incoming message while in transit (forgery). DIM also verifies that the messages your domains receive come from the specified domain.
- To enable DKIM, click Enable.
- To disable DKIM, click Disable.
SPF attempts to deny spammers the ability to send email while they forge your domain’s name as the sender (spoofing). SPF adds IP addresses to a list of servers that can send mail from your domains. It verifies that messages that your domains send originated from the listed server, which reduces the amount of backscatter that you receive.
- To enable SPF, click Enable.
- To disable SPF, click Disable.
Advanced settings
You can use the following Advanced Settings options to further configure Sender Policy Framework:
- Additional Hosts that send mail for your domains (A)
Additional hosts that the system automatically approves to send mail from your domains.
- Additional MX servers for your domains (MX)
MX entries that can send mail from your domains.
- Additional IP Address blocks for your domains (IPv4 or IPv6)
IP addresses (IPv4 or IPv6) that you approve to send mail from your domains. The system automatically includes your server’s main IP addresses in this list.
- Include List (INCLUDE)
Additional domains to include in your (Sender Policy Framework) settings. Use this setting, for example, when you send mail with another service.
- All Entry (ALL)
Whether Sender Policy Framework causes undefined hosts to fail.
- If you enable this setting, the (Sender Policy Framework) feature causes hosts that you do not define in the above lists to fail.
- If you disable this setting, the Sender Policy Framework feature does not cause undefined hosts to automatically fail. Instead, the system marks undefined hosts as Neutral. When a server receives mail from a neutral host, it functions as though you disabled (Sender Policy Framework).
After you test the entries in the above lists, we strongly recommend that you enable this feature.
- Overwrite Existing Entries
Whether to overwrite existing (Sender Policy Framework) entries. If you enable this setting, the system overwrites existing Sender Policy Framework) entries.
Video: https://youtu.be/UMUwLvPIFnQ
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