[Sun Mar 18 12:38:47 CET 2018] response='{"type":"http-01","status":"invalid","error":{"type":"urn:acme:error:unauthorized","detail":"Invalid response from http://meine.domain.de/.well-known/acme-challenge/ppjFd0vr-MwcahFoTEbJhawYiXGN4i9Jj1pOTijIOMU: \"\u003c!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"\u003e\n\u003chtml\u003e\u003chead\u003e\n\u003ctitle\u003e404 Not Found\u003c/title\u003e\n\u003c/head\u003e\u003cbody\u003e\n\u003ch1\u003eNot Found\u003c/h1\u003e\n\u003cp\"","status": 403},"uri":"https://acme-staging.api.letsencrypt.org/acme/challenge/6K60wF-LYUSf1iYhgd1iTJgfJzBPwwPHQR6a30nhPoI/110192612","token":"ppjFd0vr-MwcahFoTEbJhawYiXGN4i9Jj1pOTijIOMU","keyAuthorization":"ppjFd0vr-MwcahFoTEbJhawYiXGN4i9Jj1pOTijIOMU.-pJRRwciIyO5NcsV7R7rzjuWEuy1j9lYc5lLpcH4Ygc","validationRecord":[{"url":"http://meine.domain.de/.well-known/acme-challenge/ppjFd0vr-MwcahFoTEbJhawYiXGN4i9Jj1pOTijIOMU","hostname":"meine.domain.de","port":"80","addressesResolved":["62.75.214.xxx"],"addressUsed":"62.75.214.xxx}'
Das hat mit CNAME geht nicht oder DDNS erstmal primär nichts zu tun
...Read key length:Creating domain keyUsing config home:/var/etc/acme-client/home...
...Read key length:4096_createcsr...
[Thu Feb 7 13:46:00 CET 2019] ACME_DIRECTORY='https://acme-v01.api.letsencrypt.org/directory'[Thu Feb 7 13:46:00 CET 2019] DOMAIN_PATH='/var/etc/acme-client/home/XXX'[Thu Feb 7 13:46:00 CET 2019] Using ACME_DIRECTORY: https://acme-v01.api.letsencrypt.org/directory[Thu Feb 7 13:46:00 CET 2019] _init api for server: https://acme-v01.api.letsencrypt.org/directory[Thu Feb 7 13:46:00 CET 2019] GET[Thu Feb 7 13:46:00 CET 2019] url='https://acme-v01.api.letsencrypt.org/directory'[Thu Feb 7 13:46:00 CET 2019] timeout=[Thu Feb 7 13:46:00 CET 2019] _CURL='curl -L --silent --dump-header /var/etc/acme-client/home/http.header -g '[Thu Feb 7 13:46:00 CET 2019] ret='0'[Thu Feb 7 13:46:00 CET 2019] ACME_KEY_CHANGE='https://acme-v01.api.letsencrypt.org/acme/key-change'[Thu Feb 7 13:46:00 CET 2019] ACME_NEW_AUTHZ='https://acme-v01.api.letsencrypt.org/acme/new-authz'[Thu Feb 7 13:46:00 CET 2019] ACME_NEW_ORDER='https://acme-v01.api.letsencrypt.org/acme/new-cert'[Thu Feb 7 13:46:00 CET 2019] ACME_NEW_ACCOUNT='https://acme-v01.api.letsencrypt.org/acme/new-reg'[Thu Feb 7 13:46:00 CET 2019] ACME_REVOKE_CERT='https://acme-v01.api.letsencrypt.org/acme/revoke-cert'[Thu Feb 7 13:46:00 CET 2019] ACME_AGREEMENT='https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf'[Thu Feb 7 13:46:00 CET 2019] ACME_NEW_NONCE[Thu Feb 7 13:46:00 CET 2019] ACME_VERSION[Thu Feb 7 13:46:00 CET 2019] Le_NextRenewTime='1554640665'[Thu Feb 7 13:46:00 CET 2019] _saved_domain='XXXX'[Thu Feb 7 13:46:00 CET 2019] _saved_alt='no'[Thu Feb 7 13:46:00 CET 2019] Domains not changed.[Thu Feb 7 13:46:00 CET 2019] Skip, Next renewal time is: Mon Apr 8 12:37:45 UTC 2019[Thu Feb 7 13:46:00 CET 2019] Add '--force' to force to renew.