The remote host is running Apple OS X Server.
The remote host is running Apple OS X Server. Apple OS X Server is a collection of server-specific applications, work group management, and administration software tools. The software is offered as OS X Server, an add-on package for OS X sold through the Mac App Store. This package enables an Apple OS X computer to provide key network services, including a mail transfer agent, AFP and SMB servers, an LDAP server, a domain name server, and others.