Generate _acme-challenge. in GoDaddy

Everytime I create a new Let's Encrypt SSL, a new challenge is generated in our GoDaddy DNS.
Can I delete those challenges _acme-challenge? after the ssl are created?

you are free to delete txt record after challange passed. it's not reusable anyway.

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Not only "could you" but you also "should". If you add them manually it is up to you to remove the old values.

If you use an ACME Client to do this discuss why they are not deleted with that author. You cannot keep adding TXT values "forever". You will reach TXT value limits and have problems.

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