Stalwart
Stalwart is an all-in-one mail and collaboration server written in Rust. A single binary provides SMTP, IMAP, POP3, JMAP, CalDAV, CardDAV and WebDAV plus spam filtering, DKIM/SPF/DMARC and a web admin interface, with no external database required for a default install.
Stalwart
Installation
Default install:
1
bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVE/main/ct/stalwart.sh)"
Default Credentials
| Username | Password |
|---|---|
admin | None |
Notes
On first start Stalwart runs in bootstrap mode and generates a temporary admin password. Read it with: journalctl -u stalwart | grep -A8 'bootstrap mode'. Then finish setup at http://[IP]:8080/admin.
Running a mail server that is reachable from the internet needs correct DNS (MX, SPF, DKIM, DMARC, rDNS/PTR) and a valid TLS certificate. Set STALWART_HOSTNAME and STALWART_PUBLIC_URL in /opt/stalwart_data/etc/stalwart.env, then restart the service.
Configuration and mail data live in /opt/stalwart_data (etc, data, logs), outside the app directory, so they survive updates. Include this directory in your backups.
The default datastore is embedded RocksDB - no external database needed. PostgreSQL, MySQL, SQLite, S3, Redis and NATS backends can be configured later through the admin UI.