Sydney email infrastructure. Actually delivers.
Sydney's financial district, North Shore professional services and western suburbs business corridors all run on infrastructure that costs real money when it fails. We manage it so it doesn't.
Sydney businesses run more Exchange Online seats than anywhere else in Australia. We manage M365 tenants, on-premises Exchange and the Linux gateway layer that keeps deliverability clean across Greater Sydney.
Every layer of your Sydney 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
Australia's largest business hub — where an hour of server downtime during business hours has the highest commercial cost of any Australian city.
We host mail infrastructure in Australian data centres — including NextDC S1/S2 (Macquarie Park) and Equinix SY3/SY4 (Alexandria) — so mail data stays in Australian jurisdiction. No offshore routing of credentials or mail content, no overseas helpdesk handoffs.
Primary Sydney industries we serve: financial services, legal, professional services, technology, healthcare. Each sector has its own email compliance and deliverability requirements — we manage the full stack with those constraints built in.
Frequently asked questions
- Do you manage Microsoft 365 and Exchange for Sydney businesses?
- Yes. We manage Exchange Online tenants, on-premises Exchange Server and hybrid deployments for Sydney clients. This includes DKIM key management, DMARC alignment, Defender for Office 365 tuning, and the Linux gateway layer most 365 deployments benefit from.
- How do you handle email deliverability for Sydney senders?
- We actively manage SPF, DKIM and DMARC across all outbound paths — not just set them and forget. We monitor blacklist status on your sending IPs across 14+ RBLs, watch DMARC aggregate reports, and resolve deliverability incidents when they occur including diagnosis, remediation and delisting.
- Where is mail infrastructure hosted for Sydney clients?
- Australian data centres throughout — for Sydney clients this typically means NextDC S1/S2 (Macquarie Park) or Equinix SY3/SY4 (Alexandria). Microsoft 365 uses Australian endpoints where available. Data stays in Australian jurisdiction.
- Can you audit our existing email setup in Sydney?
- Yes, that's the most common starting point. We audit SPF, DKIM, DMARC, connector settings, filter rules, blacklist status and certificate state — document what's there, fix what's broken, and transition to ongoing management. The audit typically takes one business day.
- 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.
Sydney mail infrastructure. Just works.
Starts with an audit of what you have. Fixed scope, no surprises. Australian engineers, Australian hosting.