Matrix federation

• Federation docs

Delegation

• Delegation docs
• Resolving server names spec docs

Issue: Can't self-host on root domain when using DynDNS for hosting, because

• Can't serve a root domain website with a .well-known entry for delegation because can't have a CNAME record next to an existing SPF TXT reocord on the domain root
• Can't use a root SRV record for delegation because it requires A or AAAA records, and doesn't work with CNAME records: SRV record target matrix.oas.varac.net. is a CNAME record, which is forbidden (as per RFC2782)