Upgrades, safely
Mailcow and its containers updated on a tested path with a rollback point, so you stay current without gambling your mail flow.
Mailcow
Mailcow Support for Business Email Infrastructure
Mailcow gives you a powerful, self-hosted mail server with full control — but running it to a business-grade standard means owning upgrades, queues, certificates, backups and deliverability, not a hobby box you hope keeps working. We support and manage Mailcow as production infrastructure: secured, deliverable, monitored and backed up, with specialists who do nothing but email.
- Upgrades and troubleshooting
- Queues, certificates, monitoring
- Hardening and deliverability
- Backups and tested recovery
Common problems
Where self-hosted Mailcow gets risky.
Mailcow is excellent software, but a stack that was set up once and left alone accumulates the same failure modes — the ones that are invisible until they are catastrophic.
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Upgrades nobody runs
The stack drifts behind on updates because upgrading a live mail server feels too risky to touch without a safety net.
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Mail going to spam
Outbound mail lands in junk because IP reputation, rDNS, SPF, DKIM and DMARC were never fully aligned and maintained.
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Queues backing up
Mail silently piles up in the queue, deferrals build, and no one notices until messages are hours or days late.
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Certificates expiring
TLS certificates lapse or auto-renewal quietly breaks, and suddenly mail clients and delivery start failing.
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Backups unverified
There is a backup script somewhere, but no one has tested a restore — so the safety net may not actually catch you.
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Hardening skipped
Rspamd, fail2ban, rate limits and admin access were left near-default, leaving the server exposed to abuse and takeover.
We take ownership of the whole Mailcow stack — upgrades, queues, certificates, backups, security and deliverability — and watch it continuously, so self-hosting gives you control without the operational risk.
How Mailcow helps
Mailcow run as production infrastructure.
We bring the operational discipline a business mail server needs — the part most self-hosted deployments never get to.
Deliverability owned
IP reputation, rDNS, SPF, DKIM and DMARC configured and maintained, and blacklistings cleared, so your mail reaches the inbox.
Queues and flow watched
Queue depth, deferrals, certificate validity and service health monitored, so a building problem is caught before it bites.
Hardened properly
Rspamd, fail2ban, rate limits, TLS and admin access tuned to a business-grade standard against abuse and takeover.
Backups you can trust
Automated backups with periodically tested restores, so recovery is a known procedure, not a hope on the bad day.
Plain-English reporting
You get what we run, what we watch and what we fix — without needing to learn the internals of a mail server.
Services for this platform
Every Mailoza service, applied to Mailcow.
Pick the service that matches your situation — each links to its full detail page, all delivered to one business-grade standard on your Mailcow stack.
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Email Infrastructure
Design, build and operate your Mailcow stack to a business-grade standard.
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Managed Email Support
Ongoing operation, monitoring and a defined response for your Mailcow server.
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Email Migration
Move onto or off Mailcow without losing a single message.
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Email Security
Hardening, SPF/DKIM/DMARC at enforcement and anti-BEC defences for Mailcow.
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Email Deliverability
Diagnose and fix mail going to spam from your Mailcow server.
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Emergency Support
Rapid help when your Mailcow server is down, blacklisted or breached.
Migration options
Moving onto or off Mailcow, safely.
Whether you are adopting Mailcow or moving away from it, we stage the cutover so mail keeps flowing throughout — with a tested rollback, every time.
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Onto Mailcow
From Microsoft 365, Google Workspace, cPanel, Zimbra or another self-hosted server — mailboxes and history moved intact.
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Server-to-server
Rehosting Mailcow to new hardware, a new provider or a fresh build, carried across cleanly with no orphaned mail.
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Off Mailcow
Moving to Stalwart, a cloud platform or managed hosting? We migrate you out cleanly and document the destination.
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DNS and IP cutover
MX, rDNS, SPF, DKIM and DMARC changed in a safe, staged order so deliverability survives the move.
Security & deliverability
Hardened, deliverable and backed up.
A self-hosted server is only as safe as the discipline behind it. Here is what we put in place and keep enforced on a Mailcow 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
- Rspamd tuned for spam, phishing and outbound abuse control
- fail2ban, rate limits and connection controls against brute force and abuse
- Admin interface and SSH access locked down to least privilege
- Automated, encrypted backups with periodically tested restores
- Blacklist monitoring with prompt 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
Self-hosting, without the 3am risk.
A one-off build solves today. Managed Mailcow keeps the stack current, deliverable and watched, so you get the control of self-hosting with the reliability of a managed service.
Operations owned
Upgrades, certificate renewals, configuration changes and capacity — handled on a tested path, not left to drift.
Continuous monitoring
Queues, deferrals, service health, certificates and reputation watched, with a defined response when something needs us.
Monthly health report
Plain-English proof your Mailcow 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 actually support Mailcow, or just the big cloud platforms?
We genuinely support Mailcow. Self-hosted mail is core to what we do — we architect, secure, operate and monitor Mailcow to a business-grade standard, not as a side project. It is one of the platforms we go deep on.
Can you take over a Mailcow server someone else set up?
Yes. We start by auditing the existing stack — upgrades, security, backups, deliverability and monitoring — then 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 Mailcow mail going to spam?
Yes. With self-hosted mail the cause is usually IP reputation, missing rDNS, or SPF, DKIM and DMARC not fully aligned. We fix it at the root, clear any blacklistings, and monitor reputation continuously so it stays fixed.
Will you handle Mailcow upgrades for us?
Yes. We update Mailcow and its containers on a tested path with a rollback point, so you stay current on security and features without gambling your live mail flow on an unplanned upgrade.
How do you handle backups and recovery?
We run automated, encrypted backups and periodically test restores, so recovery is a known, rehearsed procedure rather than an untested script you hope works on the worst day.
What if our Mailcow server goes down?
If the server is down, blacklisted or breached, start with our Emergency Email Support. We respond fast, contain the incident, restore service and explain plainly what happened — then make it resilient so it does not recur.
Can you migrate us from Mailcow to Stalwart, or the other way?
Yes. We migrate between self-hosted platforms — including Mailcow to Stalwart and vice versa — with a staged cutover and a tested rollback, preserving mailboxes and history with zero data loss as the commitment.
Do we keep control of our Mailcow 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. Control is exactly why you chose self-hosting, and we respect that.
Is self-hosted Mailcow really safe for a business?
It can be — when it is run with discipline. The risk is not Mailcow itself, it is an unmaintained stack with no monitoring or tested backups. We supply the operational rigour that makes self-hosting genuinely production-safe.
How is this priced?
On outcome and expertise, never per mailbox. Build and migration work is scoped to a fixed outcome; managed Mailcow is a predictable monthly commitment with clear, fair terms and no long lock-in.