The "Intranet Claude Tag": Enterprise Deployment and the Post Office Problem

A team wants OpenClaw on their intranet, coworkers tagging it in Teams. Outbound is sorted via a forward proxy. But inbound? Teams messages come from Microsoft's cloud — pure intranet is physically impossible. The post office problem: what moves inside the building (GitLab issues), what needs a door (DMZ + Teams), and why the extra architecture hassle is the right answer.