DomainKeys Identified Mail (DKIM) is an email authentication system designed to detect email spoofing. It allows organizations to take responsibility for transmitting a message, while providing a mechanism to verify that the message was not altered during transit.  DKIM uses cryptographic signatures and public-key infrastructure to verify that an email message has not been altered during transit, and that it truly came from the claimed sender. Email senders can use DKIM to sign their messages by adding a DKIM-Signature header field to the messages. Email receivers can then use the public key published in the DNS to verify the signature and check that the message has not been tampered with. 

Steps to Configure DKIM for MailRoute

To activate DKIM, you must publish the following 3 CNAME records in your domain’s DNS if you use MailRoute as your outbound email sending source.

DKIM selectors are mr01, mr02, and mr03 in this instance. Keep in mind that this set of data is intended for domain owners who have a single MailRoute account and one or more registered domains under it.

How to Get Your DKIM Public Key Available for MailRoute

1. Log in as the administrator to your DNS provider’s administration console.
2. Go to the DNS records section of each of your domains.
3. Depending on the type of DKIM record that has been provided to you, create a TXT or CNAME record.
4. Copy and paste the hostname and value
5. Save your record’s modifications and wait 48–72 hours for your DNS to take effect.

You can use Skysnag’s free DKIM Checker to check the health of your DKIM record here

Enable DMARC for your domains to protect against spoofing. Sign up for a free trial today!

For more information on MailRoute DKIM setup, you can refer to their reference documentation

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