With a DKIM signature, an email recipient can verify that the message really came from the alleged sender. If you want to set up a DKIM signature for messages sent from your domain, create a TXT record with a public signature key for your domain.
If you delegated your domain to Yandex servers, the DKIM signature with a public key is configured automatically.
General instructions for configuring the DKIM signature
Get a TXT record with a public key in the Mail settings:
- Go to the Domains page in Mail for Business.
Click Add a DKIM signature or Configure the MX record next to the domain name you want to add your signature to.
If the domain you need is not in the list, make sure it is connected and verified.
Copy the public key value for your domain displayed in the Adding a DKIM signature section.
Log in to your DNS hosting company's control panel.
If you delegated your domain to Yandex servers, go to the Yandex.Connect DNS Editor.
Create a TXT record with the following values (field names may be different in different management panels):
Subdomain name or Host —
mail._domainkey. In some DNS control panels, you also need to specify the domain for the public DKIM key, such as
Value — The block of text from Public key that you copied in the Yandex.Connect settings.
v=DKIM1; k=rsa; t=s; p=MIGfMA0GCSEBtaCOteH4EBqJlKpe...
- If you need to fill in the TTL field, enter
Wait for the changes to take effect in the DNS. It may take DNS servers up to 72 hours to exchange the updated DNS records.