DKIM, like SPF, is a standard that enables a specific aspect of the email sending process to be authenticated. The premise of DKIM is to check that an email is really from the domain or sender that it said it was sent from and if it has been altered in any way in transit.
Specifically, DKIM (DomainKeys Identified Mail), provides a foundation for distinguishing legitimate mail. A DKIM signature is placed in the header of emails sent by BYTE's mail servers, so that the receiving mail server can then validate the signature using a public cryptographic key (2048 bit). It's added as a TXT record in the Manage DNS section for the domain name.
DKIM does not outright mean all emails will be delivered. However, it does provide the receiving mail server with further information so it can make a more informed decision on the best way to handle the email.
To add one:
- Head to your control panel and select the package you want to add a DKIM record, then go into the control panel.
- Select the DomainKeys icon.
Firstly, we'll explain how to add a simple DKIM record to your DNS.
- Ensure you’ve selected the domain you want to add the DKIM record-to.
- Add a Selector. This can be any value or name you like. It’s simply a field to identify the DKIM record. Then select Add Signature.
- If your nameservers are with BYTE, we’ll automatically add the correct TXT record for you.
The signature will be added immediately to emails sent from the mailboxes under the domain selected. We will have automatically added a DNS record to Manage DNS. You may wish to wait for this to resolve for DKIM to be effective.
From here you’re all done: your emails will use DKIM as a method to authenticate email.
You can also use the Advanced Options section, but we advise only doing this if you are experienced with DKIM.
