Your domains.
Your mailboxes.
Manage domains, mailboxes, aliases and quotas on your own Debian server.
Explore mail administration →YOUR SERVER. YOUR MAIL.
Your mail server.
Your controls.
A clearer view.
Domains, mailboxes and mail filtering, together in one self-hosted appliance. Built for administrators who want to run their own mail.
MailtronX / Mail Metrics CONSOLE PREVIEW
Built on established mail softwarePostfixrspamdClamAVDovecot
MAIL ADMINISTRATION, TOGETHER
Run your mail.
Keep your bearings.
One console for the mail services, the policies you set and the outcomes you need to understand.
Your domains.
Filtering on
your terms.
Set spam thresholds, blocklists, allow lists and routing policies from the console.
Explore filtering controls →Know how
mail is moving.
Follow live mail metrics, delivery outcomes and trends from the last hour to the last year.
See the reporting →INSIDE THE APPLIANCE
A working console.
A clear view of your mail.
Real screens from MailtronX. Inspect services, review mail outcomes and manage the blocklists at the SMTP door.
More console screenshots Dashboard, time synchronisation and counters
BEYOND THE INBOX
The everyday work
of running a mail server.
Mail administration includes the host underneath it. Keep those controls within reach.
See the complete feature set →Secure the administration
HTTPS, role-based access, LDAP / Active Directory sign-in, API tokens and an audit trail of changes.
Back up and keep current
Encrypted configuration snapshots, full-appliance backups and signed, verified software updates.
Check the domain and the host
Domain SMTP validation, certificate management, service status and system metrics in the console.
UNDER THE HOOD
An established stack.
An inspectable mail path.
Mail-processing services run on the appliance. DNS and reputation checks, updates, certificate issuance and optional diagnostics contact external services. Read the privacy details →
01 / RECEIVEPostfix
Connection checks and SMTP policies
02 / FILTERrspamd + ClamAV
Spam scoring and antivirus scanning
03 / DELIVERDovecot
Mailbox delivery, quotas and IMAP
Explore the complete mail flow Inbound, outbound and every supporting package
Inbound
Senderany mail server on the Internet, port 25
nftablesdefault-drop firewall; Spamhaus DROP netblocks dropped on every port
Postfix postscreenweighted DNSBL vote before the greeting: own zone and mirrored feeds answered by rbldnsd, public lists through unbound; pre-greet test
Postfix smtpdHELO must be a valid FQDN, sender and recipient domains must exist, relay only for your networks; recipients, routes and lists read live from MariaDB
rspamdSPF, DKIM, DMARC, ARC; Bayes, fuzzy, neural, reputation; RBL, URL and phishing lists; rate limits, greylisting, your lists and country scores; ClamAV on every part; oletools on office files; state in Redis
Verdictreject at score 12, greylist at 4, tag at 6, or clean; every outcome counted
Postfix queueforwardings, BCC copies and the archive address applied; deferred mail retried
Dovecotdelivery over LMTP, quota enforced, tagged mail filed in the Quarantine folder by Sieve
Mailboxread over IMAP with the mailbox's own password
Outbound
Mail clientdesktop or phone app
Postfix submissionports 587 and 465, TLS required; the client authenticates through Dovecot SASL and may send only as its own mailbox
MailtronX policy servicethe quota group's sending limits per hour, day and week, checked at the end of every message
rspamdthe same scan as inbound, then the DKIM signature for the sending domain
Postfix smtproute per domain or recipient, relay host or sender relay with credentials, or direct delivery; all from MariaDB
Recipient serverTLS when the other side offers it
Around the path
MariaDBevery setting; the mail server reads its maps from it live, and every managed file is regenerated from it
RedisBayes, fuzzy hashes, reputation, rate-limit buckets, scan history
rbldnsdserves the appliance's own blocklist zone and the hourly mirrors of six public feeds
unboundthe appliance's own recursive resolver for public blocklist lookups
dnsmasqroutes blocklist zones to rbldnsd and unbound, everything else upstream
ClamAVantivirus daemon; freshclam keeps the signatures current
oletoolsoffice-macro analysis behind the olefy daemon
chronyauthenticated NTS time sources
rsyslogevery log line, forwarded over TLS, TCP or UDP if you want
fail2banbans brute-force sources
auditdsystem auditing
nginxTLS for the console and the ACME challenge path
MailtronX consolethe dashboard, every configuration page, the API and the audit trail
Evaluating your options? Compare MailtronX with other mail products →
START WITH YOUR SERVER
Make it your
mail appliance.
Install on a fresh Debian 13 server. The bootstrap verifies the signed release and package checksum before installation.
Installation guideCURRENT RELEASE 0.25.25
curl -fsSL https://mailtronx.com/install.sh | sudo bash- Fresh Debian 13 · 64-bit · root access
- 2 GB RAM minimum
- Public DNS name and reachable mail ports
Free and open source. MailtronX is licensed under AGPL-3.0. Licence details
Single-server deployment today. Docker, VM images and fleet synchronisation are planned. RBL and roadmap