Exchange Online Management
Managed Exchange Online is a business email management service — Mycelium 365 configures, secures, and monitors Exchange Online for Australian organisations so email is reliable, compliant, and protected from phishing and data loss.
Reliable, secure, and optimized email management for your business. Streamline email operations, enhance security, and ensure reliable delivery.
Email is still the #1 attack vector for Australian businesses — phishing, business email compromise and invoice fraud account for the majority of cyber-incident financial loss reported by SMBs to the ACSC each year. Exchange Online Management is how we close that gap: correctly configured mail flow, enforced DMARC, tuned anti-impersonation policies, deliverability monitoring, and SMTP2Go relay for the legacy systems that still need to send mail. We treat your mail platform as critical infrastructure, not a set-and-forget appliance.
Who this is for
Australian organisations on Microsoft 365 who can't afford a bad delivery day or a successful phishing attack — particularly professional services (legal, accounting, finance), construction and engineering firms exchanging invoices and contracts daily, and anyone who has had a near-miss with business email compromise or whose insurer is now asking pointed questions about DMARC and Defender for Office 365.
Ready to see our competitive pricing?
Exchange Online Administration
Day-to-day administration of your Exchange Online tenant — mailbox provisioning, shared and resource mailboxes, distribution lists, mail flow rules and transport configuration. Joiner/mover/leaver flows hand off cleanly to the rest of your Microsoft 365 estate so nothing is forgotten or orphaned.
SPF, DKIM & DMARC Deliverability
Authentication records configured and continuously monitored, DMARC progressively moved from p=none to p=quarantine to p=reject as deliverability is verified, and aggregate reports analysed each week through our proprietary DMARC tooling. Your domain stops being abusable by attackers and your legitimate mail reaches the inbox.
Anti-Phishing & Anti-Spoofing
Tuned anti-impersonation policies that protect your executives and finance team specifically, safe links rewriting and safe attachments detonation (Defender for Office 365), quarantine policies with end-user review, and mailbox audit logging on by default. Where licensed, we run continuous attack simulations to find and coach the users most likely to click.
SMTP2Go for Legacy Systems
Managed SMTP relay included for scanners, ERP, accounting, CRM and any line-of-business app that can't speak modern OAuth. Sending is isolated from your Exchange tenant (protecting your sender reputation), properly SPF/DKIM signed, and every message is logged for delivery troubleshooting.
Backup, Retention & Recovery
Third-party Microsoft 365 backup for mailboxes, calendars and contacts with point-in-time recovery beyond native retention, plus configured retention policies, litigation hold and recovery procedures for accidental deletion or compromise. You can prove what you had and get it back.
