A DKIM record is a TXT record that adds a digital signature to your outgoing emails. This allows the receiving mail server to verify that the email was truly sent by your domain and that it wasn't tampered with during transit.
ℹ️ The DKIM button is a wizard to insert the DKIM key that you created in the Email domain settings as TXT record into the DNS zone. All fields except of TTL are read only, they get filled automatically with the DKIM key data from the Email domain. The resulting record will get saved as TXT record in the zone.
The form contains the following fields:
• Public-Key: The DKIM public key of this domain. If you have not created a DKIM key yet, go to the Email domain settings to do that first.
• DKIM-Selector: The DKIM selector that is currently used to sign email of this domain.
• TTL: The time interval (in seconds) that this record may be cached before the source of the information should again be consulted. Zero values are interpreted to mean that the record can only be used for the transaction in progress, and should not be cached.
• Active: This defines whether this DKIM record is active or not.