During the first connection, you'll be asked whether you want to trust the server's key or not. This is to ensure that you connect to the correct server.
On Linux and Apple OS X, you can add the following lines to the file ~/.ssh/known_hosts to automate the review:
@cert-authority *.hostpoint.ch ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFWLS/vgrNVYR+Yx6UnJD19yMzFGpxrOwScWFIEEJChR Hostpoint Host CA 1
@cert-authority *.hostpoint.ch ssh-rsa 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 Hostpoint Host CA 2
Warning: Attention: This presupposes that you specify the Hostpoint server as servername, for example, "sl101.web.hostpoint.ch".
The certificate will not be accepted if you use your own domain name.
For support requests please use this form instead.