iCloud+ authentification DKIM problem with Custom domain

Question

iCloud+ authentification DKIM problem with Custom domain

Hi,

I have configured a custom domain following Apple guidelines (https://support.apple.com/en-gb/HT212524). Everything works fine, except DKIM authentication did not work. I have checked with many mail testers solutions on the internet.

I have dug a little bit more :

When I use icloud.com, my email is perfectly authenticated with DKIM
When I use iOS 15 mail app or Monterey Mail App, DKIM doesn't work

Mail app for both Monterey and iOS 15 needs to be updated. Is it the case with beta versions ?

Posted on Nov 2, 2021 3:40 AM

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Answer 1

deh2k

Level 4

1,890 points

Nov 13, 2021 6:37 AM in response to florentfromnice

I sent a sample email from my custom domain regarding the lack of DKIM signature to the Apple iCloud admins and got a reply back about it:

Thank you for your message. The feature you are inquiring about is not yet available, but we are working on supporting DKIM signing for custom domains within iCloud Mail.

Best regards,

iCloud Mail Team

I could quibble with the term "feature" but I was glad to hear that they are aware of the problem and are working on fixing it.

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Answer 2

deh2k

Level 4

1,890 points

Nov 11, 2021 3:43 PM in response to florentfromnice

I think that this is a serious problem with the Custom Email Domain feature and I hope that Apple engineers fix it soon.

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iCloud+ authentification DKIM problem with Custom domain

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