Freelance IT consulting for small businesses

Reliable IT infrastructure for teams that need secure, practical support.

Practical support for Windows Active Directory, Microsoft 365, email security, DNS, firewall, VPN, Windows Server and backup review — delivered with careful changes, clear communication and documentation you can actually use.

Production-safe changes Clear written summaries Remote support available
M365 Tenant, email, DNS and delivery support
Windows AD Best practices for secure enterprise AD environment.
Audit Backup, security and improvement review
Clear scope. Careful changes.

Support for Windows AD, Microsoft 365, DNS, VPN, firewall, backups and Windows Server issues — with practical next steps and clear documentation.

Who this is for

Built for small teams that need dependable IT help.

A good fit when you need someone technical, careful and practical — without building a full internal IT department.

Small businesses

Companies that need reliable IT support without unnecessary overhead.

M365 users

Teams setting up email, custom domains, DNS records or Exchange Online.

Remote teams

Users who need secure VPN access and safer remote work configuration.

Owners

Decision makers who want clear explanations, not technical noise.

Risk-aware teams

Businesses that want a practical review of backups, access and security basics.

Service packages

Clear starting points for common IT problems.

Instead of “general IT help”, these packages define practical outcomes: what will be reviewed, configured or documented.

Email & cloud

Microsoft 365 Email Setup

For businesses moving to professional email, setting up a custom domain or fixing mail delivery and authentication issues.

  • Domain verification and DNS records
  • Exchange Online setup guidance
  • SPF, DKIM and DMARC configuration
  • Mailbox and alias planning
  • Mail delivery troubleshooting
Network access

Firewall, VPN & Remote Access Setup

For secure remote work access, firewall rule review and practical hardening of access into your business network.

  • VPN configuration review
  • Firewall policy and exposure check
  • MFA-ready access guidance
  • User/group access planning
  • Simple access documentation
Windows infrastructure

Windows Active Directory and Enterprise Environment

For businesses that need a complete Windows-based IT foundation or a structured review of their existing domain environment.

  • Windows domain design and domain controller setup
  • Active Directory users, groups and OU structure
  • Group Policy baseline configuration
  • File server setup, permissions and shared folders
  • DNS, DHCP and core Windows Server roles
  • Documentation and practical handover guidance
Capabilities

Support across the infrastructure stack.

Focused help for the practical systems small businesses depend on: identity, email, DNS, remote access, servers, backups and monitoring.

Microsoft 365 & Exchange Online

Tenant setup, custom domains, mailbox planning, email authentication and mail flow troubleshooting.

Exchange OnlineSPFDKIMDMARC

DNS & domain configuration

Clean DNS records for email, websites, redirects, verification records and safer domain ownership.

Not sure what is wrong?

Send the symptom, error message or goal. I can help identify the likely area: DNS, mail flow, firewall, VPN, server or access control.

Firewall, VPN & secure access

Remote access setup, firewall rule review, user access planning and practical hardening recommendations.

VPNFirewallRemote work

Windows Server & Active Directory

Support for domain environments, DNS, DHCP, users, permissions, Group Policy and server troubleshooting.

Backup & restore readiness

Backup review, restore test planning and recommendations that help reduce business risk.

Basic security review

Practical checks for MFA, DNS email security, exposed access, admin accounts, backup readiness and logging basics.

Understand the environment

We start with the current setup, business need, urgency, access requirements and production risk before making changes.

Define safe next steps

For critical systems, I prefer clear scope, backups or exports where possible, and confirmation before larger changes.

Implement and validate

Changes are tested and validated against the actual goal: mail delivery, access, connectivity, security or reliability.

Document the result

You get a practical summary of what was checked, what changed and what should be improved next.

FAQ

Before we start.

A few details that make remote IT work safer, clearer and easier to scope.

Yes. Most work can be handled remotely using secure screen sharing, documented access and clear communication. On-site work depends on location and availability.

Yes. One-time troubleshooting is a good fit for mail delivery issues, DNS problems, VPN access, Windows Server issues, backup review and configuration checks.

A clear goal, current symptoms, screenshots or error messages, information about business impact and confirmation that backups or configuration exports exist where relevant.

For clearly defined tasks, fixed pricing is possible. For troubleshooting or unknown environments, a limited initial assessment is usually the safest starting point.

Send what you want to achieve, what is currently not working, systems involved, urgency, and whether this affects production users.

Contact

Need help with your IT setup?

Send a short description of the issue or project. Include the system involved, what you want to achieve and how urgent it is.

contact@mtolj.com
Croatia / Remote
Freelance and remote consulting

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