Test servers with various kinds of problems to test against.
- Blackholed (-j DROP)
- Blocked (-j REJECT)
- Simulated packet loss
- Multiple SRV records with combinations of the above
- Various combinations of IPv4 & IPv6 availability
- SRV target pointed at a port that does not speak XMPP, such as HTTP
I acquired a domain for this purpose.
Next step is to set up a few VirtualHosts with various configurations.