2fab98c0a8
- 20 IPs (.90-.109 / mta01-mta20) with FCrDNS + SPF in HestiaCP - .90 (mta01) dedicated Yahoo/AOL recovery IP (yahooslow, 20s trickle) - .91-.109 (out02-out20) rotation pool via transport_maps randmap - pw-mta-warmup: cron-driven scheduler grows the active rotation pool 3 -> 5 -> 8 -> 12 -> 16 -> 19 IPs over ~25 days - mta_setup.sh: idempotent installer (backups + postfix-check-gated reload) New IPs verified clean on Spamhaus/Barracuda/SpamCop/SORBS. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
60 lines
2.2 KiB
Bash
Executable file
60 lines
2.2 KiB
Bash
Executable file
#!/bin/bash
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# Postfix IP-warmup scheduler.
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#
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# Gradually expands the outbound sending-IP rotation pool over a warmup window,
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# so we don't blast 20 brand-new IPs at consumer ISPs on day one (which looks
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# like snowshoe spam and torches reputation).
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#
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# IP layout:
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# .90 / mta01 -> dedicated Yahoo/AOL recovery IP (transport: yahooslow)
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# .91-.109 / mta02-mta20 -> rotation pool (transports: out02..out20)
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#
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# transport_maps = hash:/etc/postfix/transport, randmap:{<active pool>}
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# - hash routes yahoo/aol -> yahooslow (the dedicated .90 trickle)
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# - randmap round-robins the source IP across the *active* rotation pool
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#
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# This script (run daily by cron) recomputes the active pool from the warmup
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# start date and reloads Postfix only when the pool changes. It never shrinks.
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#
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# Run once with `--start` to stamp the start date.
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set -euo pipefail
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STATE=/etc/postfix/pw-warmup-start
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MAINCF=/etc/postfix/main.cf
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POSTCONF=/usr/sbin/postconf
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POSTFIX=/usr/sbin/postfix
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# Rotation transports (.91-.109). .90 is Yahoo-dedicated, not in rotation.
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ALL=(out02 out03 out04 out05 out06 out07 out08 out09 out10 out11 \
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out12 out13 out14 out15 out16 out17 out18 out19 out20)
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if [ "${1:-}" = "--start" ]; then
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date +%s | sudo tee "$STATE" >/dev/null
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echo "warmup start stamped: $(date)"
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fi
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[ -f "$STATE" ] || date +%s | sudo tee "$STATE" >/dev/null
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START=$(cat "$STATE"); NOW=$(date +%s); DAYS=$(( (NOW - START) / 86400 ))
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# Warmup schedule: day-since-start -> active rotation IPs
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if [ "$DAYS" -le 3 ]; then N=3
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elif [ "$DAYS" -le 7 ]; then N=5
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elif [ "$DAYS" -le 11 ]; then N=8
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elif [ "$DAYS" -le 17 ]; then N=12
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elif [ "$DAYS" -le 24 ]; then N=16
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else N=19; fi
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POOL=""
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for ((i=0; i<N; i++)); do POOL="${POOL}${ALL[$i]}:,"; done
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POOL="${POOL%,}"
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NEWVAL="hash:/etc/postfix/transport, randmap:{${POOL}}"
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CUR=$($POSTCONF -h transport_maps 2>/dev/null || echo "")
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if [ "$CUR" != "$NEWVAL" ]; then
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sudo $POSTCONF -e "transport_maps=${NEWVAL}"
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sudo $POSTFIX reload >/dev/null 2>&1 || true
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logger -t pw-warmup "day $DAYS -> $N rotation IPs active"
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echo "$(date '+%F %T') warmup: day=$DAYS active_rotation_ips=$N"
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else
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echo "$(date '+%F %T') warmup: day=$DAYS active_rotation_ips=$N (no change)"
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fi
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