Due to some imprecise terminology in various blog posts on dynamic ports and their host, I’ve been let to believe that all dynamic ports was to use the same host - the default host - limiting the real world use of dynamic ports severely. This is however not the case.
It’s quite simple really: a dynamic send port will always use the port configured as the default handler of the particular adapter.
So, all dynamic send ports do not use the same default host, but all dynamic send ports of a particular adapter will use the same host.
This behavior can still limit the use of dynamic adapters, but not to the same extend.