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O365 DKIM key upgrade 1024-bit keys to 2048-bit

Anonymous
2023-05-09T17:53:49+00:00

I have DKIM key size 2048 for selector 1 and 1024 for selector 2. I am trying to upgrade selector 2 to 2048 key size. Do we have a command to rotate key size for just selector 2?

When we rotate/upgrade DKIM key size to 2048, do we have to update our external DNS record with new public key? we are using external DNS.

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  1. Anonymous
    2023-05-09T19:38:11+00:00

    Hi Kartheen E,

    I'm Tim, an Independent Consultant here and a Microsoft user like you. I don't work for Microsoft and do not have access to any of your data on their system.

    I have carried out some research, please click on the below link to a previous thread where a Microsoft Agent provides instructions to carry this out:-

    https://answers.microsoft.com/en-us/msoffice/forum/all/o365-upgrade-dkim-1024-bit-keys-to-2048-bit/e58b7bf6-61b4-4e71-a677-6c3ce30ead54

    I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further or If you find it helpful, you can mark this comment as the answer.

    Kind regards

    Tim

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