DKIM Validation and DKIM Signing

DKIM (DomainKeys Identified Mail) is an email authentication method that checks whether emails have been manipulated during transfer.

DKIM signing adds a DKIM signature to the email header of an outgoing email. Once a server receives an email with a DKIM signature and performs a DKIM validation, the receiving server queries the public key that has been entered in the DNS zone of the sending domain in a TXT record. This key is used to check whether the DKIM signature is correct. The DKIM validation reveals if an email was altered during delivery.

Set CNAME records for all of your domains for which you would like to use DKIM (see Setting a CNAME Record).

You can authenticate the senders of incoming emails with DKIM validations. To do so, first activate the DKIM validation (see Activating the DKIM Validation) and then configure the advanced options (see Configuring Advanced Options for DKIM Validation).

To enable the recipients of your outgoing emails to perform DKIM validations, add DKIM signatures to your outgoing emails (see Activating DKIM Signing).