MrTech Melbourne

Guides

Practical guides for modern business IT.

Email, cloud, security, websites and networking — clear advice for Melbourne teams, with free tools where they help.

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Recommended reading order

New to business IT? Work through these guides in order — email setup, cloud onboarding, security, then support.

  1. 1
    Managed IT1 Mar 2026

    What is a managed IT service?

    A plain-language explanation of managed IT — what is included, who it suits, and how it differs from calling someone only when something breaks.

  2. 2
    Security22 Mar 2026

    Essential Eight for small business

    What the ACSC Essential Eight maturity model means in practice — and a realistic path for Melbourne SMEs.

  3. 3
    Email15 Sept 2025

    Fix SPF for Microsoft 365

    Stop legitimate email bouncing or landing in spam by getting your SPF record right for Microsoft 365.

  4. 4
    Websites25 Apr 2026

    Which website technology stack should you use?

    WordPress, page builders, or modern frameworks — how Melbourne businesses should choose a stack for speed, security and longevity.

EmailUpdated

Fix SPF for Microsoft 365

Stop legitimate email bouncing or landing in spam by getting your SPF record right for Microsoft 365.

Inside this guide

  • Why SPF matters
  • The Microsoft 365 include
  • Check before you change
Run email checkInspect DNS records
3 sections
4 minRead
NetworkUpdated

What is bufferbloat?

Why video calls lag when someone starts a download — and how to measure it on your connection.

3 minRead
SecurityUpdated

Website security headers explained

HSTS, CSP and the headers that improve trust, SEO and protection against common attacks.

  • Start with the basics
  • Check what you already have
3
5 minRead
EmailUpdated

Set up DMARC for your business

Move from none to quarantine with a policy that protects your domain from spoofing without breaking legitimate mail.

  • What DMARC actually does
  • Start with monitoring
3
5 minRead
CloudUpdated

Microsoft 365 onboarding checklist

The setup steps most small businesses miss — identity, email, devices and security in the right order.

What you will learn

  • 1Identity first
  • 2Email and DNS
  • 3Devices and data
Verify email records
6 minRead
Managed IT

Signs your business needs managed IT

When break-fix stops scaling — and what good ongoing support should look like for a growing Melbourne team.

  • Reactive firefighting
  • No single view of your stack
3
4 minRead
WebsitesUpdated

Why is my website slow?

Hosting, images, scripts and caching — the usual suspects behind sluggish load times and poor Core Web Vitals.

5 minRead
SecurityUpdated

MFA for business teams

Why every account needs a second factor — and how to roll it out without locking staff out on Monday morning.

  • Passwords are not enough
  • Choose the right methods
3
4 minRead
Network

Business Wi‑Fi vs a home router

Why consumer gear struggles in offices — and what to look for in access points, VLANs and guest networks.

  • Density and reliability
  • Segmentation matters
3
4 minRead
DNS

Domain expiry and DNS basics

How registration, nameservers and records fit together — and how to avoid your site and email going dark overnight.

4 minRead
Managed ITUpdated

What is a managed IT service?

A plain-language explanation of managed IT — what is included, who it suits, and how it differs from calling someone only when something breaks.

  • Managed IT in one sentence
  • What is usually included
4
5 minRead
Managed ITUpdated

How much does managed IT cost in Melbourne?

Typical pricing models, per-user ranges, and what drives the quote up or down for Melbourne small businesses.

6 minRead
Managed ITUpdated

Managed IT vs break-fix support

Compare reactive hourly IT with ongoing managed services — cost, risk, and which model fits your team.

  • Break-fix: pay when it hurts
  • Managed IT: pay for prevention
4
5 minRead
SecurityUpdated

Essential Eight for small business

What the ACSC Essential Eight maturity model means in practice — and a realistic path for Melbourne SMEs.

  • What the Essential Eight is
  • Start where attackers start
4
7 minRead
SecurityUpdated

Microsoft 365 security checklist

A practical checklist for Entra ID, Exchange Online, SharePoint and Teams — the settings Melbourne admins most often miss.

6 minRead
EmailUpdated

Email security best practices

Reduce phishing, spoofing and invoice fraud with authentication, filtering, and habits your team can maintain.

  • Authenticate your domain
  • Filter before the inbox
4
5 minRead
WebsitesUpdated

Website design cost in Melbourne

What drives quotes for business websites in Melbourne — templates, custom builds, ongoing support, and realistic budgets.

What you will learn

  • 1What you are buying
  • 2Typical Melbourne ranges
  • 3Ongoing costs
  • 4How to compare proposals
Check your current site
6 minRead
WebsitesUpdated

Which website technology stack should you use?

WordPress, page builders, or modern frameworks — how Melbourne businesses should choose a stack for speed, security and longevity.

  • Match stack to outcomes
  • WordPress and page builders
4
6 minRead
SecurityUpdated

Why business websites get hacked

The common causes — outdated plugins, weak passwords, bad hosting, and missing patches — and how Melbourne businesses reduce risk.

5 minRead
CloudUpdated

OneDrive vs SharePoint for business

When to use OneDrive, SharePoint, or both — file ownership, team sites, and common mistakes Melbourne businesses make in Microsoft 365.

5 minRead
CloudUpdated

Cloud backup for small business

What to back up in Microsoft 365 and beyond, how cloud backup differs from sync, and how to know restores actually work.

  • Sync is not backup
  • What to protect
4
6 minRead
CloudUpdated

Hybrid cloud explained for small business

When to keep servers on-prem, what belongs in Microsoft 365 or Azure, and how hybrid setups stay secure and supportable.

  • What hybrid means
  • What usually stays on-prem
4
5 minRead
CloudUpdated

Microsoft 365 vs Google Workspace

A practical comparison for Melbourne businesses choosing email, files, and collaboration — strengths, trade-offs, and migration effort.

What you will learn

  • 1Where each platform shines
  • 2Files and collaboration
  • 3Security and compliance
  • 4Switching cost
Check email DNS
6 minRead
Cloud

Disaster recovery and cloud backups

RTO, RPO, and runbooks in plain language — how Melbourne businesses plan recovery when servers, sites, or Microsoft 365 fail.

  • RPO and RTO defined
  • Scenarios to plan for
4
5 minRead
DNS

What is DNS?

How the internet finds your website and delivers your email — explained without jargon for business owners.

  • DNS in plain language
  • Why businesses should care
4
4 minRead
DNSUpdated

A, CNAME, MX and TXT records explained

The DNS record types every Melbourne business touches — what each one does and common misconfiguration mistakes.

5 minRead
DNSUpdated

How to change DNS without breaking email

A safe order of operations when moving web hosts, adding Cloudflare, or switching to Microsoft 365 — keep mail flowing.

  • Inventory first
  • Lower TTL before cutover
4
6 minRead
DNSUpdated

DNS propagation — how long does it take?

Why DNS changes are not instant, what TTL means, and how to know when the world sees your new records.

  • Caching everywhere
  • Typical timelines
4
4 minRead
DNSUpdated

Cloudflare DNS for small business

When Cloudflare helps with speed and security, what the orange cloud means, and pitfalls for email and Microsoft 365.

5 minRead
DNSUpdated

Protect your domain from DNS hijacking

Registrar lock, 2FA, nameserver monitoring, and habits that stop attackers redirecting your site or email.

  • How hijacking happens
  • Registrar hygiene
4
5 minRead
EmailUpdated

What is DKIM?

How DKIM signing proves your email is authentic — and how to check it is working for Microsoft 365 and other senders.

  • DKIM in plain language
  • How it differs from SPF
4
4 minRead
EmailUpdated

How SPF, DKIM and DMARC work together

The three pillars of business email authentication — what each does, how they align, and the order to implement them.

5 minRead
EmailUpdated

Why does business email go to spam?

Authentication failures, reputation, content, and list hygiene — how Melbourne businesses improve inbox placement.

  • Authentication is table stakes
  • Reputation and volume
4
6 minRead
EmailUpdated

Shared mailbox vs distribution list in Microsoft 365

Which to use for info@, sales@, and team inboxes — licensing, replies, and permissions explained.

What you will learn

  • 1Distribution lists (groups)
  • 2Shared mailboxes
  • 3When to pick which
  • 4Security note
Verify domain mail DNS
5 minRead
EmailUpdated

Business email compromise (BEC) — what to know

Invoice fraud, payroll redirection, and fake CEO requests — how Melbourne businesses reduce BEC risk.

  • What BEC looks like
  • Technical layers
4
5 minRead
EmailUpdated

How to enable DKIM in Microsoft 365

Step-by-step overview for turning on DKIM signing and publishing the DNS records Microsoft requires.

4 minRead
NetworkUpdated

VPN for small business — when you need one

Site-to-site, remote access VPN, and modern zero-trust alternatives — what suits Melbourne offices and hybrid teams.

  • What a VPN does
  • When VPN still makes sense
4
5 minRead
NetworkUpdated

Guest Wi‑Fi security for offices

How to offer visitor internet without exposing printers, servers, or staff devices on the same LAN.

4 minRead
NetworkUpdated

Why is my office internet slow?

ISP plans, Wi‑Fi coverage, bufferbloat, and LAN bottlenecks — how to diagnose sluggish business connectivity.

  • Define slow
  • Plan and contention
4
6 minRead
NetworkUpdated

Ethernet vs Wi‑Fi for business

When to cable desks, meeting rooms, and servers — and when modern Wi‑Fi is good enough for daily work.

What you will learn

  • 1Ethernet wins on stability
  • 2Wi‑Fi wins on flexibility
  • 3Hybrid is normal
  • 4Security angle
Compare wired vs wireless
4 minRead
NetworkUpdated

VLANs explained for small business

Split staff, guest, cameras, and servers on separate virtual networks — without enterprise complexity.

  • What a VLAN is
  • Typical SME layout
4
5 minRead
NetworkUpdated

Secure remote access for hybrid teams

Beyond VPN — conditional access, MFA, and cloud-first patterns Melbourne businesses use for staff working from home.

5 minRead

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