The main sending IPs are cleanly warmed: today 3,845 sent at 0.18% bounce,
ZERO deferrals, ZERO ISP rate-limit/blocklist/Spamhaus hits. The script's own
note records these IPs historically sustained ~2,500/day at 68-76% delivery;
collapses only ever came from 17k-29k spikes. So we have ample headroom to
accelerate the trucking ramp safely:
day 7-13: 300/h -> 400/h (~4,000/day) [applied now, day 8]
day 14+: new 500/h (~5,000/day) [hard ceiling, well under ~17k]
Also vendored pw-listmonk-rampcap into the repo (infra/postfix/) -- it
previously lived only on the server at /usr/local/bin. Live script updated and
applied (listmonk cap now 400/h).
887bf9a14a