Postfix & Dovecot tuned
SMTP and IMAP configured, optimised and documented — transport, authentication, mailbox storage and routing done correctly.
Linux Mail Servers
Linux Mail Server Support for Reliable Business Email
Postfix, Dovecot and the Linux mail stack are the engine behind a huge amount of business email — powerful, flexible, and unforgiving when something drifts. We are the email engineers behind your Linux mail server: SMTP and IMAP, DNS and TLS, queues and logs, hardening and backups, kept to a business-grade standard and watched continuously, by people who do nothing but email.
- Postfix, Dovecot, SMTP, IMAP
- DNS, TLS, deliverability
- Queues, logs, monitoring
- Hardening and backups
Common problems
Where a Linux mail server quietly fails.
A hand-built Postfix and Dovecot stack is brilliant when it is maintained and dangerous when it is not. These are the failure modes we are called in to fix.
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Mail going to spam
Outbound mail lands in junk because IP reputation, rDNS, SPF, DKIM and DMARC are incomplete, misaligned or unmaintained.
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Queues backing up
Postfix queues grow, deferrals pile up and mail is delayed for hours, with no alerting to catch it early.
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TLS certificates lapse
Certificates expire or auto-renewal silently breaks, and mail clients and delivery start failing without warning.
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Logs no one reads
The maillog holds the answer to most problems, but nobody is watching it, so issues surface only when users complain.
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Server left exposed
Open relays, weak authentication, missing fail2ban and over-broad access leave the server a target for abuse and takeover.
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One person knows it
The whole setup lives in one engineer's head or an old runbook, so a leaver, an illness or a holiday becomes a crisis.
We take ownership of the whole Linux mail stack — Postfix, Dovecot, DNS, TLS, queues, logs, security and backups — document it, and watch it, so reliable business email no longer depends on one person remembering everything.
How Mailoza helps
Linux mail, run to a business-grade standard.
We bring the operational discipline a production mail server needs across the whole stack — the part a hand-built setup usually lacks.
Deliverability owned
IP reputation, rDNS, SPF, DKIM and DMARC configured and maintained, and blacklistings cleared, so your mail reaches the inbox.
Queues & logs watched
Queue depth, deferrals, certificate validity, disk and log signals monitored, so a building problem is caught before it bites.
Server hardened
Relay controls, TLS, authentication, fail2ban, rate limits and least-privilege access tuned against abuse and takeover.
Backups you can trust
Automated backups of configuration and mail with periodically tested restores, so recovery is a known procedure.
Documented, not tribal
The setup is documented and operated by a team, so your email no longer depends on one person's memory.
Services for this platform
Every Mailoza service, applied to Linux mail.
Pick the service that matches your situation — each links to its full detail page, all delivered to one business-grade standard on your Linux mail stack.
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Email Infrastructure
Design, build and operate your Postfix and Dovecot stack to a business-grade standard.
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Managed Email Support
Ongoing operation, monitoring and a defined response for your Linux mail server.
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Email Security
Relay control, hardening, SPF/DKIM/DMARC at enforcement and anti-BEC defences.
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Email Deliverability
Diagnose and fix mail going to spam from your Linux mail server.
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Email Migration
Move onto or off Linux mail, or modernise to Mailcow or Stalwart, without losing mail.
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Emergency Support
Rapid help when your Linux mail server is down, blacklisted or breached.
Migration options
Moving onto, off, or modernising Linux mail.
Whether you are consolidating onto Linux mail or modernising away from a fragile stack, we stage the cutover so mail keeps flowing — with a tested rollback, every time.
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Onto Linux mail
From cPanel, a shared host or another server onto a properly built Postfix and Dovecot stack, with history moved intact.
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Server-to-server
Rehosting your Linux mail to new hardware, a new provider or a clean rebuild, carried across with no orphaned mail.
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Modernise to Mailcow / Stalwart
Move a hand-built stack onto a maintainable modern platform while keeping all mail and history.
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Off Linux mail to cloud
Migrating to Microsoft 365 or Google Workspace? We move you out cleanly with no lost mail or broken forwarding.
Security & deliverability
Hardened, deliverable and backed up.
A Linux mail server is only as safe as the discipline behind it. Here is what we put in place and keep enforced across the stack.
- SPF, DKIM and DMARC configured and moved to enforcement with alignment
- IP reputation and reverse DNS (rDNS) set up and maintained
- TLS enforced with valid, auto-renewing certificates and expiry monitoring
- Open-relay prevention and SMTP authentication tightened
- fail2ban, rate limits and connection controls against brute force and abuse
- SSH and host access locked down to least privilege
- Automated, encrypted backups of config and mail, with tested restores
- Mail-log and queue monitoring with prompt blacklist delisting when needed
We harden honestly. No one is ever "100% secure" — we make your server a hard target, keep it deliverable, and tell you the residual risk plainly.
Managed support
Reliable Linux mail, without the single point of failure.
A one-off fix solves today. Managed Linux mail keeps the stack current, deliverable and watched — and replaces tribal knowledge with a team that owns it.
Operations owned
Patching, certificate renewals, configuration changes and capacity — handled on a tested path, not left to drift.
Continuous monitoring
Queues, deferrals, certificates, disk, logs and reputation watched, with a defined response when something needs us.
Monthly health report
Plain-English proof your Linux mail server is healthy — what we ran, what we caught and what we fixed.
Information:
Honest about 24×7
Questions
Answers, in plain English.
Do you support Postfix and Dovecot specifically?
Yes. Postfix and Dovecot are core to what we do. We design, build, secure, operate and monitor Linux mail stacks to a business-grade standard — transport, IMAP, authentication, storage and routing — not as a side project.
Can you take over a Linux mail server someone else built?
Yes. We audit the existing stack — configuration, security, deliverability, backups and monitoring — document it, bring it up to a business-grade standard, and take over its operation. You do not have to rebuild from scratch.
Can you fix our Linux mail server sending to spam?
Yes. With self-hosted mail the cause is usually IP reputation, missing rDNS, or SPF, DKIM and DMARC that are incomplete or misaligned. We fix it at the root, clear any blacklistings, and monitor reputation so it stays fixed.
Our mail queue keeps backing up — can you sort that?
Yes. Queue build-up usually points to a deliverability, DNS, throttling or resource problem in the logs. We diagnose the root cause, clear the backlog safely, and add monitoring so the next build-up is caught before users notice.
Can you handle TLS certificates and renewals for us?
Yes. We enforce TLS with valid certificates, make auto-renewal reliable, and monitor expiry, so mail clients and delivery never fail because a certificate quietly lapsed.
Our whole mail setup lives in one person's head — can you de-risk that?
Yes, and it is a common reason businesses call us. We document the entire stack and operate it as a team, so a leaver, an illness or a holiday is no longer a crisis. Your email stops depending on one person remembering everything.
What if our Linux mail server is down right now?
If the server is down, blacklisted or breached, start with our Emergency Email Support. We respond fast, read the logs, contain the incident, restore service and explain plainly what happened — then make it resilient.
Should we modernise off our hand-built stack to Mailcow or Stalwart?
Sometimes. A well-run Postfix and Dovecot stack is perfectly valid, but if maintenance is the real problem, moving to a maintainable modern platform like Mailcow or Stalwart can be the better long-term answer. We advise honestly and, if it fits, migrate you with zero data loss.
Do we keep control of our server?
Always. It stays your server and your data on your infrastructure. We operate it with the access we need, which you can see and revoke at any time.
How is this priced?
On outcome and expertise, never per mailbox. Build and migration work is scoped to a fixed outcome; managed Linux mail is a predictable monthly commitment with clear, fair terms and no long lock-in.