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My domain is: onefh.com
I ran this command: https://onefh.com:8443
It produced this output: http://files.panodome.com/uploads01/Image_2017-05-19__17-41-52__1495208512.jpg
My operating system is (include version): Debian 8.5
My web server is (include version): Plesk Onyx V 17.5.3
My hosting provider, if applicable, is: 1und1.de
I can login to a root shell on my machine (yes or no, or I don't know): yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): yes, 1und1 for VPS and Plesk for hosting my domains
is there such a thing like a free security certificate from Let's Encrypt, that is trusted by standard browser Chrome, IE, FireFox, respectively Windows or OS ?
It's about avoiding a recurring certificate fee for signing up to a service where any good or bad can sign to anyways. I mean in terms of trustfulness of the domain.
Is it possible to avoid fees and domain visitors won't see the warning ?