certbot von Git holen:
mkdir letsencrypt
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt
Kommando:
sudo ./certbot-auto certonly --server https://acme-v02.api.letsencrypt.org/directory -d *.domainname.ddnss.de --email mailadresse@domainname.at --preferred-challenges dns --manual
Nach Ausgabe des dns txt Records, diesen am dyndns hinterlegen (erst danach mit enter weitergehen):
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Please deploy a DNS TXT record under the name
_acme-challenge.domain.ddnss.de with the following value:
XXXXXXXXXDkhGYxURn8y039JHAkpyxD50
Before continuing, verify the record is deployed.
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