Email infrastructure that actually delivers.
Microsoft Exchange and Linux mail platforms run by engineers who actually understand SMTP, DKIM, SPF, DMARC and deliverability. The infrastructure your business runs on, managed by people who've been running it for two decades.
Every layer of your mail stack.
Exchange & Office 365
- Exchange Server 2016/2019 and Exchange Online
- Hybrid deployments — on-prem and cloud in parallel
- DKIM key management and selector rotation
- Defender for Office 365 tuning
- Shared mailboxes, distribution groups, resource calendars
Linux mail platforms
- Postfix MTA configuration and hardening
- Dovecot IMAP/POP3 for hosted mailboxes
- Amavis + ClamAV + SpamAssassin filter stack
- SMTP relay and smarthost configuration
- Custom routing rules and transport maps
Deliverability
- SPF record review — lookup count, policy, include chains
- DKIM signing on all outbound paths
- DMARC policy enforcement and aggregate reporting
- MTA-STS and TLS-RPT for inbound protection
- Blacklist monitoring across 14+ major RBLs
Migrations & cutovers
- Exchange version upgrades and platform changes
- On-premises to Microsoft 365 migrations
- 365 to self-hosted or hybrid transitions
- MX record cutovers planned for minimal downtime
- Parallel-run testing before any cutover
You hear from us before things break — not after.
Production-grade monitoring is not optional — it ships with every engagement. We watch queue depth, delivery latency, bounce rates, TLS failures, certificate expiry, blacklist status on your sending IPs, and SMTP connectivity from external probes. Alerting goes to us directly.
The alternative is finding out about a mail problem when someone calls asking why they haven't heard back from you. That's not acceptable infrastructure management.
Getting mail delivered is a technical discipline.
Most mail problems aren't server problems — they're authentication and reputation problems.
A misconfigured SPF record that exceeds the 10-lookup limit. A DMARC policy that's been
on p=none since 2019 because
nobody set up the reporting. A DKIM signing key that Microsoft 365 quietly stopped using after
a license change. A shared outbound IP that ended up on Spamhaus because of a neighbour.
These aren't exotic failures. They happen continuously on unmanaged mail infrastructure. We keep the authentication layer clean, monitor blacklist status proactively, and own deliverability incidents when they do occur — including diagnosis, remediation, and delisting.
Frequently asked questions
- What does managed mail infrastructure include?
- Day-to-day operation of your mail platform: server maintenance, software patching, certificate renewals, queue management, spam/virus filter tuning, and production-grade monitoring with alerting. It also includes deliverability work — keeping SPF, DKIM and DMARC correctly configured, monitoring blacklist status, and troubleshooting delivery failures as they occur.
- Do you support Microsoft 365 and Exchange Online?
- Yes. We manage Exchange Online tenants alongside on-premises Exchange and hybrid environments. This includes connector configuration, DKIM key management, DMARC alignment, Defender for Office 365 tuning, and the mail-flow rules that keep your environment clean. We also manage the Linux gateway layer that most 365 deployments benefit from for additional filtering and relay control.
- How do mail migrations work?
- We plan and execute the cutover — staging the new environment in parallel, migrating mailboxes, testing delivery in both directions, then cutting the MX records over with minimal downtime. We've done this between Exchange versions, from on-premises to 365, from 365 to Linux platforms, and combinations of all three. The key is testing before you cut, not after.
- What monitoring is included?
- Queue depth, delivery latency, bounce rates, blacklist status on sending IPs, TLS negotiation failures, certificate expiry, disk and memory on the mail servers, and SMTP connectivity checks from external probes. Alerting goes to us directly — you hear about problems when they're fixed, not when they start.
- What is email deliverability and why does it matter?
- Deliverability is whether your legitimate mail actually reaches the inbox. A misconfigured SPF record, a DKIM signing failure, a DMARC policy that's been on p=none for years, or a sending IP on Spamhaus — any of these can cause mail to be silently junked or rejected. We actively manage these signals rather than waiting for someone to complain they're not getting replies.
- Can you take over an existing mail setup?
- Yes, that's the most common starting point. We do an audit of the current configuration — SPF, DKIM, DMARC, connector settings, filter rules, blacklist status, certificate state — document what's there, fix what's broken, and transition to ongoing management. The audit typically takes one business day.
Mail infrastructure that just works.
Starts with an audit of what you have. Fixed scope, no surprises. Australian engineers, Australian hosting.