The pfSense NAT rdr rules added in f7cf9f07 hardcoded 10.0.20.203
(Traefik LB IP) as the redirect source. That couples mail's LAN
path to Traefik's IP choice — if Traefik moves again (it just
moved .200 → .203 on 2026-05-30), the mail path silently breaks.
Removing the script and the matching doc paragraph; keeping the
networking.md .200 → .203 staleness fix (separate correction).
Follow-up: give the mail HAProxy listener a dedicated pfSense
Virtual IP (IP Alias on opt1), update Technitium internal zone
+ WAN port-forwards to target the VIP, so mail's LAN-side path
is decoupled from any other service's LB IP.
c7cf21a986