Mail Server
Enterprise self-hosted mail server — complete MTA, MDA, anti-spam, and security stack delivering reliable, private, and fully controlled email infrastructure for your organisation.
Why Choose Mail Server?
Full Email Stack
Integrated MTA and MDA in a single deployment handles SMTP routing, IMAP/POP3 access, webmail, and shared mailboxes without third-party dependencies.
Multi-Layer Anti-Spam & AV
Rspamd and ClamAV work in tandem for spam scoring, Bayesian filtering, greylisting, and real-time virus scanning before mail hits any inbox.
Security-First Delivery
Automated DKIM signing, SPF/DMARC validation, mandatory TLS, and certificate management ensure your outbound mail passes authentication and isn't blacklisted.
High Availability
Multi-node clustering with automatic failover and replication keeps mail flowing during maintenance windows and hardware failures.
Full Data Ownership
Self-hosted on your own infrastructure — no third-party provider holds your messages, attachments, or contact data.
Compliance & Archiving
Immutable mail archiving, configurable retention policies, and comprehensive delivery logs satisfy regulatory and audit requirements.
Core Features
SMTP Relay & Routing
Inbound and outbound mail routing with queue management, rate limiting, and bounce handling
IMAP / POP3 Access
Full mailbox access with folder synchronisation and mobile device support via ActiveSync
Anti-Spam Filtering
Rspamd with Bayesian learning, greylisting, blocklists, and automatic quarantine management
Email Authentication
DKIM signing, SPF and DMARC policy enforcement, and TLS encryption on all connections
Webmail & Collaboration
Browser-based webmail with integrated calendar (CalDAV) and contacts (CardDAV) sharing
Administration & Monitoring
Multi-domain control panel, user provisioning, queue monitoring, and delivery reporting
Modules & Components
1Mail Transfer Agent (MTA)
Postfix-based SMTP engine for all inbound and outbound mail routing
- SMTP Inbound & Outbound
- Mail Queue Management
- Smart Relay Configuration
- Per-Domain Rate Limiting
- Bounce & NDR Handling
- Custom Routing Rules
2Mail Delivery Agent (MDA)
Dovecot IMAP/POP3 server with full mailbox and quota management
- IMAP4 / POP3 Access
- Mailbox Provisioning
- Per-User Quota Enforcement
- Sieve Filter Scripts
- Shared & Public Folders
- Mobile ActiveSync (EAS)
3Anti-Spam & Anti-Virus
Rspamd and ClamAV stack for pre-delivery threat filtering
- Rspamd Spam Scoring
- Bayesian Filter Training
- Greylisting
- ClamAV Virus Scanning
- Blocklist / Allowlist
- Quarantine Management
4Email Security
Authentication protocols and encryption to protect mail in transit and at rest
- DKIM Signing & Verification
- SPF Record Validation
- DMARC Policy Enforcement
- STARTTLS / TLS Enforcement
- SSL Certificate Management
- Inbound Header Sanitisation
5Webmail & Collaboration
Roundcube webmail with calendar and contact sharing for end users
- Roundcube Webmail
- CalDAV Calendar Sharing
- CardDAV Contact Sync
- Mailing List Management
- Auto-Reply & Vacation Notices
- Aliases & Catch-All Forwarding
6Administration & Monitoring
Centralised control panel, user lifecycle management, and operational observability
- Multi-Domain Management
- User & Group Provisioning
- LDAP / Active Directory Sync
- Mail Log Analysis
- Queue & Delivery Monitoring
- Archiving & Retention Policies
Transform Your Business Today
Join hundreds of companies leveraging Mail Server to streamline operations and drive growth.