DKIM (DomainKeys Identified Mail) record shows us that the email wasn't in any way modified between the sender and the recipient. DKIM uses asymmetric encryption, and there are two keys, one public that can be seen by anyone who received an email from the sender and one private that is located on the senders' server. The private key is used for encryption, and the public for decryption.
To better understand DKIM records, there are a few basic tags used you should know about:
- s -- Selector, this is the name of the record you're using,
- d -- Domain, together with selector, allows you to find the public key, and
- p -- The public key is a part of the DKIM record.
Example of a DKIM record:
Note:DKIM record needs to be generated on your server, which varies between different types of servers/panels being used.
Now, let's look at how you can add your DKIM record to your DNS zone. First, you're going to need to log in to your mCloud portal and navigate to My Services and select mDNS:
Click on AnyCast, and there you can see your domains and a button to add a new domain:
Click on the domain you wish to edit the DNS zone for. On the right, you'll see an option for adding new records:
In the dropdown menu, select TXT as a new record type and then click Add, and a new window will open where you can enter the record:
In the text area Name, you should enter the DKIM selector (when generating the DKIM record, you will get or create a selector for that DKIM record), and in the text area Content, enter the rest of the generated record. Click on the Submit button, and the record will be saved.