I have a very basic understanding of how and why certificates are used. I have Zimbra installed at home for me, myself, and I. I've recently changed to using https access since lately I've been accessing my mail server externally more and more.
When attempting to access my mail server from a friend's or client's machine I get a certificate error citing that the user is unknown or that it's not a trusted signer.
Is this to be expected unless I somehow purchase a commercial certificate from somewhere? Or is this a case of me simply not knowing what I'm doing? I wouldn't be terribly surprised if it was the latter of the two
Any direction is appreciated. I've done some searching and most of what I found was dealing with expired or commercial certs.