Admin done properly
Mailboxes, shared mailboxes, distribution and security groups, permissions, connectors and mail flow rules configured correctly and kept tidy.
Microsoft 365
Microsoft 365 Email Support, Security and Migration
Microsoft 365 is powerful, but most tenants are set up once and never tuned — so mail lands in spam, MFA is half-rolled-out and admin issues drag on. We become the email specialists behind your Microsoft 365: we fix the admin problems, harden the tenant, get your DNS and authentication right, and keep it watched. You keep full control of your tenant — we simply own the email outcome.
- Admin and mailbox issues handled
- Migration without data loss
- MFA, Defender basics, hardening
- DNS, SPF, DKIM, DMARC done right
Common problems
Where Microsoft 365 email quietly goes wrong.
A tenant that was stood up quickly — or inherited from a previous provider — usually carries the same handful of issues. None of them are dramatic on day one, and all of them cost you eventually.
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Mail landing in spam
Outbound mail goes to junk because SPF, DKIM and DMARC were never aligned across every sender your tenant uses.
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No one owns admin
Mailbox permissions, shared mailboxes, distribution lists and connectors drift, and nobody is accountable when something breaks.
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Security left at defaults
MFA is partly rolled out, legacy authentication is still open, and the security defaults the tenant shipped with were never reviewed.
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Migration scars
A rushed move into Microsoft 365 left missing mail, broken calendars or duplicate items that no one has cleaned up.
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Defender is a black box
Anti-phishing, safe links and quarantine are either untouched at default or so aggressive that real mail goes missing.
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DNS nobody understands
MX, autodiscover and authentication records are a tangle from old providers, and changing them feels too risky to touch.
We name each issue plainly, fix it in a safe order, and leave you with a Microsoft 365 tenant that is correctly configured, hardened and documented — so you stop firefighting and start trusting your email.
How Mailoza helps
Your specialist email team for Microsoft 365.
We work as the deep email expertise your generalist IT does not have to keep in-house — across admin, security, deliverability and migration.
Deliverability fixed
SPF, DKIM and DMARC aligned across every legitimate sender and moved to enforcement, so your mail reaches the inbox and spoofing stops.
Tenant hardened
MFA enforced, legacy authentication closed, conditional access where it fits and Defender basics tuned against current phishing and BEC.
Safe migrations
Moves into or out of Microsoft 365 — including hybrid — planned, staged and validated with a tested rollback and zero data loss as the commitment.
Watched continuously
Mail flow, authentication, reputation and certificate validity monitored, so problems are caught before they cost you a customer.
Plain-English reporting
You get what we found, what we changed and what you should do next — in language a busy owner reads in one pass.
Services for this platform
Every Mailoza service, applied to Microsoft 365.
Pick the service that matches your situation. Each links to the full detail page — all delivered to one business-grade standard on your tenant.
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Managed Email Support
Ongoing admin, monitoring and a defined response for your Microsoft 365 email.
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Email Migration
Move to or from Microsoft 365 — including hybrid — without losing a message.
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Email Security
MFA, legacy lockdown, SPF/DKIM/DMARC at enforcement and anti-BEC defences.
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Email Deliverability
Diagnose and fix mail going to spam from your Microsoft 365 tenant.
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Email Infrastructure
DNS, mail flow and integration design around your Microsoft 365 environment.
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Emergency Support
Rapid help when Microsoft 365 mail is down, blacklisted or compromised.
Migration options
Moving to or from Microsoft 365, safely.
Whatever direction you are moving, we plan and stage the cutover so your business keeps working throughout — with a tested rollback, every time.
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Onto Microsoft 365
From Google Workspace, Exchange, Zimbra, cPanel or a self-hosted server — mailboxes, calendars, contacts and shared resources moved intact.
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Hybrid Exchange
Staged coexistence between on-premises Exchange and Microsoft 365, handled by people who do hybrid for a living.
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Off Microsoft 365
Leaving for Google Workspace or self-hosted? We move you out cleanly, with no orphaned mail or broken forwarding.
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Tenant-to-tenant
Consolidating after a merger or splitting a business? We migrate between Microsoft 365 tenants without losing history.
Security & deliverability
Hardened and deliverable, not just switched on.
Microsoft 365 ships with strong building blocks — they only protect you once they are configured, aligned and kept enforced. Here is what we put in place.
- SPF, DKIM and DMARC aligned across every legitimate sender and moved to enforcement
- DMARC aggregate-report monitoring so spoofing is visible and stopped
- MFA enforced and legacy authentication protocols disabled
- Conditional access applied where the plan and your risk justify it
- Microsoft Defender anti-phishing, safe links and quarantine tuned sensibly
- Mailbox forwarding and inbox rules reviewed for hidden compromise
- MX, autodiscover and authentication DNS corrected and documented
- Audit logging enabled so you can prove your controls to a client or insurer
We harden honestly. No one is ever "100% secure" — we make your tenant a hard target and tell you the residual risk plainly.
Managed support
Keep it working, secure and watched.
A one-off fix solves today. Managed support keeps your Microsoft 365 email right as your business, your senders and the threat landscape change.
Day-to-day admin
New mailboxes, leavers, permissions, shared mailboxes and mail flow changes — handled, so your IT is not stuck on email tickets.
Continuous monitoring
Mail flow, authentication, reputation and certificate validity watched, with a defined response when something needs us.
Monthly health report
Plain-English proof your Microsoft 365 email is healthy — what we watched, what we caught and what we fixed.
Information:
Honest about 24×7
Questions
Answers, in plain English.
Do you support Microsoft 365 even though Microsoft offers support?
Yes. Microsoft supports the platform; we support your email. We do the configuration, hardening, deliverability and day-to-day admin Microsoft will not do for you, and we own the outcome instead of pointing you at a knowledge-base article. We never bad-mouth Microsoft — we simply add the specialist layer your tenant is missing.
Will we keep control of our Microsoft 365 tenant?
Always. It stays your tenant, your billing and your data. We work as administrators with the access we need to do the job, and you can see and revoke that at any time. We never lock you in.
Can you fix our Microsoft 365 mail going to spam?
Yes — this is one of the most common reasons people call us. We diagnose the exact cause, which is usually SPF, DKIM or DMARC alignment across third-party senders, fix it at the root, clear any blacklistings, and monitor it so it stays fixed.
Can you migrate us onto Microsoft 365 without losing email?
Yes. We move mailboxes, calendars, contacts and shared resources with a staged cutover and a tested rollback plan. Zero data loss and no surprise downtime is the commitment, including hybrid Exchange environments.
Do you handle hybrid Microsoft 365 and on-premises Exchange?
Yes. Hybrid coexistence is one of the trickier setups and one we do regularly — staged, validated and documented, so on-premises and cloud mail flow correctly during and after the move.
Can you set up or fix MFA and conditional access?
Yes. We enforce MFA as the highest-impact control against account takeover, close legacy authentication that bypasses it, and apply conditional access where your plan and risk justify it — rolled out with care so it protects accounts without becoming a daily obstacle.
What about Microsoft Defender — do we need it tuned?
Usually, yes. Defender for Office 365 is powerful but is often left at defaults or set so aggressively that legitimate mail disappears. We tune anti-phishing, safe links and quarantine to current threats so you are protected without losing real mail.
Can you help with our Microsoft 365 DNS records?
Yes. MX, autodiscover, SPF, DKIM and DMARC are exactly where most Microsoft 365 problems live. We correct them carefully, stage authentication changes so nothing breaks, and document what we did so the next change is not a guess.
What if our Microsoft 365 email is down right now?
If mail has stopped, is blacklisted or an account is compromised, start with our Emergency Email Support. We respond fast, contain the incident, restore service and tell you plainly what happened — then make it resilient so it does not recur.
How is this priced?
On outcome and expertise, never per mailbox. Projects are scoped to a fixed outcome; managed support is a predictable monthly commitment with clear, fair terms and no long lock-in.