DNS Challenge for renewal when using cloudflare tunnel


is there something special that needs to be done when using cloudflares argo tunnel?
My reverse proxy is traefik and it sees that renewals must be done.
But now I get
Could not find solver for: tls-alpn-01
Is DNS challenge generally possible when using the tunnel?
I also temporarily reopened ports 80 and 443, but this makes no difference.

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Hi @juxeii, and welcome to the LE community forum :slight_smile:

DNS challenge only needs access to your authoritative DNS servers [usually public - not likely behind a VPN].


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