cPanel 11
Email Authentication

Email authentication helps prevent spam. The options below attempt to equip email messages with verifiable information so that the nature of incoming and outgoing messages can be detected automatically.

Enabling these features should reduce the number of failed delivery notifications you receive when spammers forge messages from your domain(s). These features also work to prevent spammers from forging messages that claim to be from your domain(s).


DKIM is a means of verifying incoming email. It ensures that incoming messages are unmodified and are from the sender from whom they claim to be. This feature works to prevent incoming spam messages.

Status: Enabled & Active (DNS Check Passed)


The SPF system allows you to specify servers and IP addresses that are authorized to send mail from your domain(s). This feature works to prevent outgoing spam messages.

Status: Disabled
Your current raw SPF record is :

Advanced Settings:

Additional Hosts that send mail for your domains (A):
All the hosts you specify here will be approved for sending mail. You do not need to specify your primary mail exchanger or any server that an mx has been created for as they are already included automatically.
Additional MX servers for your domains (MX):
All the mx entries for every domain you specify here will be approved for sending mail.
Additional Ip blocks for your domains (IP4):
All the IP blocks you specify here will be approved for sending mail. Blocks should be specified in CIDR format (ie

The main server interface IP cannot be removed from this list if it is present. The following IP is the main server interface IP:
Include List (INCLUDE):
The SPF settings for all hosts you specify in this list will be included with your SPF settings. This is useful if you will be sending mail though another service (e.g.,, etc).
All Entry (ALL):
If you are sure you have entered all hosts (your primary mail exchanger and any other mx entries are automatically included) that will send mail for your domain, check this box to exclude all other domains.
Overwrite Existing Entries:
If you select this option all existing SPF records will be overwritten for all your domains with these selections.