Complete PostMTA Installation Guide — Production Ready
Prerequisites
- Ubuntu 22.04 / Debian 12
- 2GB+ RAM, 20GB+ SSD
- Static IP with rDNS configured
- Domain with DNS access
Step 1: Install PostMTA
curl -sSL https://postmta.com/install | bash
# Or Docker
docker run -d -p 25:25 -v /opt/postmta/config:/config postmta/postmta:latest
Step 2: Configure DNS
Set up DKIM, SPF, DMARC records. PostMTA generates DKIM keys automatically.
Step 3: IP Warmup
Start at 1K emails/day, ramp 20% daily. PostMTA automates warmup scheduling.
Step 4: Monitor
Real-time dashboard: delivery rates, bounce rates, reputation scores.
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