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Incorrect documentation still recommends DNS TXT for DKIM
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When setting up my new domain, I was mislead by one article that suggested I put the DKIM keys in a TXT record. This article needs to be updated not to suggest DKIM in TXT as the default option:
In order to enable DKIM for your embedded domain, you just need to add the following public keys as records to your DNS server. If your provider offers a web frontend: Subdomain: MBO0001._domainkey Ressource Record: TXT Text:
https://kb.mailbox.org/en/private/e-mail-article/using-e-mail-addresses-of-your-domain/
Only later did I come across this article which points out that DKIM in TXT is deprecated and to switch to CNAME:
https://kb.mailbox.org/en/private/custom-domains/how-to-set-dkim-entries-with-txt-fields-in-the-dns
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