certbot certonly --non-interactive --test-cert
-d domain.com -d www.domain.com
my question is related to --preferred-challenges option
because --preferred-challenges is a list, I assumed certbot can try in order specified challenges
I assumed it tries DNS challenge and if it fails it will try HTTP challenge.
But it’s not like that, my script failed on DNS challenge and stop.
Can certbot try one auth challenge and if it fails try another auth challenge?
it not, can you explain why --preferred-challenges is a list
because currently certbot only uses the first challenge from the preferred-challenges list.
Thanks in advance !