DKIM key change history

Could someone please advise me where I can find the DKIM key change history of the Gmail server? I need to authenticate an email from 2017 for litigation purposes. Thank you very much.

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@expert9511  I am not sure about the "history" you are talking about but this is the way to setup a new dkim authentication:

https://support.google.com/a/answer/180504

 

You can get some historical DKIM keys and records at https://archive.prove.email, -- there's a key there from Jan 2017, but it was likely rotated out mid-2017.

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