Each time a new connection to a verification server is required, the list of potential hosts (the set of <Host> elements) is subjected to one of the three <HostListOrder> algorithms:
- Static: (Default) Selects the first host from the list. If it is unsuccessful, it selects the other hosts in order until one is successful.
- Rotate: Selects the next entry from the list of <Host> elements in a ring fashion.
- Shuffle: Randomly selects one entry from the list of <Host> elements.