docker-mailserver
Production-ready, config-driven mail server in a single container
Overview
docker-mailserver is a production-ready full-stack mail server (Postfix, Dovecot, Rspamd, ClamAV, Fail2ban) configured via files instead of a database. It runs as a single container with no external dependencies, making it lightweight to operate. It is a popular self-hosted alternative to Gmail / Google Workspace for hosting mailboxes. Configuration is done through plain-text files and env vars.
Key features
- Full mail stack in one container: Postfix, Dovecot, Rspamd, ClamAV, Fail2ban
- Configuration through plain-text files and environment variables instead of a database
- No external dependencies required to run
- Runs as a single Docker container
- Mailbox hosting as a self-hosted Gmail/Google Workspace alternative
Our take
docker-mailserver bundles a genuinely production-grade mail stack (Postfix, Dovecot, Rspamd, ClamAV, Fail2ban) into a single container with no external dependencies, and its file-based, database-free configuration makes the whole thing transparent and easy to version-control. That same design is also the catch: this is a mail server, not a managed mailbox product, so you're responsible for DNS records, SPF/DKIM/DMARC, reverse DNS, and the ongoing reputation battle to land in inboxes. The 4/5 difficulty rating is honest, and email is unforgiving of misconfiguration. If you understand the protocols and want full ownership of your mailboxes, it's one of the cleanest self-hosted options; if you don't, the learning curve is steep.
Ideal for: Sysadmins comfortable with email internals who want a config-file-driven, single-container mail server they fully control.
Where it falls short of Gmail / Google Workspace
- No admin web UI — all config is via files and the CLI
- No bundled webmail or groupware (calendar/contacts)
- Deliverability, DNS, and TLS setup are entirely your responsibility
- Not a newsletter/marketing tool — mailboxes only
We list the gaps honestly so you can decide if the trade-off is worth owning your data.
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