Hi Juergen,
Cisco Expressway Series supports ACME protocol (Automate Certificate Management Environment) which enables automatic certificate signing and deployment from Let’s Encrypt. I am using Let’s Encrypt for Cisco Jabber Mobile Remote access.
Hope this helps. I don’t know how to answer questions on standard template.
ConnectFailure - Unable to connect to the remote server
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You need a working port 80 / http. Same with all of your other domains.
But that’s a configuration problem of your system you have to fix before you can create a certificate.
PS: The edge2 has the “next” ip address. But the non-www has a completely different ip address.
Is there a redirect to one of the edge-Domains?
Normally: If you create a SAN-certificate via http-validation, all domains have the same ip address. I don’t know if your client supports such a configuration with different ip addresses.
It’s possible to create redirects. But I don’t see if this is your setup.
An alternative could be creating HTTP 301 redirects from /.well-known/acme-challenge on one host to /.well-known/acme-challenge on another, since Let’s Encrypt validation will follow this redirect.