Title: Mailgun – DKIM error
Last modified: February 16, 2021

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# Mailgun – DKIM error

 *  Resolved [Chris](https://wordpress.org/support/users/seepops/)
 * (@seepops)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/mailgun-dkim-error/)
 * The latest update 2.6.0 now displays the results of a SPF/DKIM/DMARC check when
   sending a test email. I’m using a subdomain with Mailgun and all DNS settings
   are set up and verified in Mailgun. However, when sending a test email the plugin’s
   check for DKIM comes back false and says “Action Needed: It doesn’t look like
   the DKIM record required by Mailgun has been added to your domain.”
    Is there
   a bug here?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [Gregor Capuder](https://wordpress.org/support/users/capuderg/)
 * (@capuderg)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/mailgun-dkim-error/#post-14057310)
 * Hi Chris,
 * the Domain Check feature in our plugin is new and because DKIM records can have
   different key prefixes/selectors, we’re still gathering feedback and updating/
   improving this feature.
 * Could you please let me know which DKIM prefix you used for the Mailgun DKIM 
   DNS TXT record? We are currently checking for these prefixes: `'pic', 'mailo','
   mx'` and are planning to update this list with `'krs', 'k1', 'mta'` this or next
   week (what other users have reported). Is your DKIM prefix different?
 * With the “prefix/selector” I mean this part of the DKIM name property: `$prefix.
   _domainkey.$domain`
 * Thank you for reporting this issue and have a nice day!
 *  Thread Starter [Chris](https://wordpress.org/support/users/seepops/)
 * (@seepops)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/mailgun-dkim-error/#post-14057344)
 * Hi Gregor,
 * Thanks for the reply. I’ve got lots of sites that I use Mailgun so I’ve just 
   been through them all. Most prefixes match your list but I have a few others 
   that aren’t on your list:
 * ’email’, ‘s1’, ‘smtp’.
 * Hope that helps.
 *  Plugin Author [Gregor Capuder](https://wordpress.org/support/users/capuderg/)
 * (@capuderg)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/mailgun-dkim-error/#post-14057407)
 * Hi Chris,
 * thank you very much!
 * These have been added and will go live once we update the Domain Checker feature.
 * Have a nice day!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Mailgun – DKIM error’ is closed to new replies.

 * ![](https://ps.w.org/wp-mail-smtp/assets/icon-256x256.png?rev=1755440)
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 * 3 replies
 * 2 participants
 * Last reply from: [Gregor Capuder](https://wordpress.org/support/users/capuderg/)
 * Last activity: [5 years, 4 months ago](https://wordpress.org/support/topic/mailgun-dkim-error/#post-14057407)
 * Status: resolved