since several week it is impossible to renew some certificate with more than 100 nale inside it.
During verificatio process, one or more subdomain are not validated because of timeout.
the servers do received the requests with the challenges et do reply to the requests with a 200 Ok and the challenge.
but i do have a lot of this things:
Attempting to renew cert (fr.front.recette9.vpglabs.site) from /etc/letsencrypt/renewal/fr.front.recette9.vpglabs.site.conf produced an unexpected error: Failed authorization procedure. it.frontadmin.recette9.vpglabs.site (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching http://it.frontadmin.recette9.vpglabs.site/.well-known/acme-challenge/SM2pLWfz_s3GSjRiBlLKWttK0elg62zBw7qbcJUFlb4: Timeout during connect (likely firewall problem)
it.provider.recette9.vpglabs.site (http-01): urn:ietf:params:acme:error:connection :: The server could not connect to the client to verify the domain :: Fetching http://it.provider.recette9.vpglabs.site/.well-known/acme-challenge/C59r6lP1yWkWjWQqz-fqBG12O8kh4qkcw0W7UaMpl98: Timeout during connect (likely firewall problem)
as saif befor i can see all incoming connection, and my server reply to the challenge with 200 OK.
Sometime it works, sometimes not (but most of the time is is not)
i checkd wether it was google banned because a bad contents but it is not. no AAAA records.
It used to work very fine before.
problem is either on test server or prod server from lets encrypt