DKIM: wrong record found

Owned by Massimo Arrigoni (Unlicensed)
Last updated: Mar 12, 2018 by Deliverability (Unlicensed)
1 min read

Oops! The DKIM record appears to be incorrectly configured. This is easy to fix. Here is a bit of background information and what to do next.


What is DKIM

DKIM is one of the ways to authenticate email communication. Some information is added to your Web domain settings, and some other information is added to all the emails that we send for you. When the two match, the email is considered authenticated.

Why it matters

Adding DKIM authentication can increase your deliverability. That is: the percentage of your messages that are delivered to in the Inbox instead of the Spam folder.

Editing your DKIM record

Here is what you need to do:

  • Contact your Web hosting company, domain registrar, or network administrator that manages this domain
  • Tell them that you need to make a change to the DNS (Domain Name System) records
  • Ask them to create the following two CNAMEs (replace "mydomain.com" with your domain)
    (1) ml01._domainkey.mydomain.com 

    ... and point it to
    ml01.dkim.musvc.com.

    (2) ml02._domainkey.mydomain.com

    ... and point it to
    ml02.dkim.musvc.com.
  • Wait 24-48 hours: it takes a bit of time to changes to propagate around the Internet
  • Run this test again to confirm that the CNAMEs have been successfully updated.

What happens if you don't do it

If your emails are not authenticated by you, we will authenticate them for you. This will help with deliverability, but will result in some email clients showing "On behalf of..." or "Via..." next to your sender information. That's because email programs want to let the recipient know that another system was involved in the mailing.