Der moderne Enterprise-Mailserver. E-Mail, Kalender, Kontakte & GoBD zu 100 % auf deinem Server.

# Linux & macOS: SHA-256-geprüfter Installer & Updater v1.3.1 (Docker Compose, .deb oder systemd)
curl -fsSL https://nextxch.com/install.sh | sudo bash

# Windows Server (2019 / 2022 / 2025): Lädt das .msi, prüft SHA-256 & startet den Assistenten
irm https://nextxch.com/install.ps1 | iex

# Gepinnter Container-Start (Version 1.3.1 für linux/amd64 & linux/arm64)
docker run -d --name nextxch -p 25:25 -p 465:465 -p 587:587 -p 993:993 -p 80:80 -p 443:443 \
  -v nextxch-data:/data nextxch/server:1.3.1

# Enterprise Active-Active Stack (Release 1.3.1) + PostgreSQL 18, MS SQL Server oder SQLite WAL
services:
  nextxch:
    image: nextxch/server:1.3.1
    restart: unless-stopped
    ports: ["25:25", "465:465", "587:587", "993:993", "4190:4190", "80:80", "443:443"]
    environment:
      Storage__Provider: "Postgres"        # "Postgres", "SqlServer" oder "Sqlite"
      Cluster__Enabled: "true"             # Multi-Node Cluster ohne Redis
      Storage__BlobBackend: "Hybrid"       # NVMe-Cache + S3 WORM Object Lock
    volumes:
      - ./nextxch-data:/data

# Windows Server .msi Installer (SQLite WAL, MS SQL Server 2019-2025/Express oder PostgreSQL 18)
irm https://nextxch.com/install.ps1 | iex

# Unbeaufsichtigte Installation als nativer Windows-Dienst ohne Docker Desktop:
msiexec.exe /i Nextxch-Setup-win-x64.msi /qn `
  DEFAULT_DOMAIN="firma.de" MAIL_HOSTNAME="mail.firma.de" `
  ADMIN_EMAIL="admin@firma.de" STORAGE_PROVIDER="SqlServer"

# Scoped API-Key (smk_...) & deklaratives Infrastructure-as-Code Management
export NEXTXCH_URL="https://mail.firma.de"
export NEXTXCH_API_KEY="smk_01j8x9_..."

nextxch-cli domain dns firma.de --bind
nextxch-cli snapshot > state.json
nextxch-cli apply -f state.json --dry-run

// Integrierte Transactional HTTP API mit Idempotency-Key & Dual-DKIM
using var http = new HttpClient { BaseAddress = new("https://mail.iqmeta.de") };
http.DefaultRequestHeaders.Add("X-Api-Key", Environment.GetEnvironmentVariable("NEXTXCH_KEY"));
http.DefaultRequestHeaders.Add("Idempotency-Key", "inv-2026-0841");

var res = await http.PostAsJsonAsync("/api/v1/send", new {
    from = "billing@iqmeta.de",
    to = new[] { "accounting@customer.de" },
    subject = "ZUGFeRD Invoice #2026-0841",
    htmlBody = "<p>Please find your EN 16931 invoice attached.</p>"
});