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.
- 1Managed 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.
- 2Managed IT5 July 2026
How to choose an MSP in Melbourne
A practical checklist for Melbourne business owners comparing managed IT providers — scope, security, response times, and exit terms.
- 3Security22 Mar 2026
Essential Eight for small business
What the ACSC Essential Eight maturity model means in practice — and a realistic path for Melbourne SMEs.
- 4Email15 Sept 2025
Fix SPF for Microsoft 365
Stop legitimate email bouncing or landing in spam by getting your SPF record right for Microsoft 365.
- 5Websites25 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.
What is Microsoft Intune for small business?
A plain-English guide to Microsoft Intune for Australian SMBs — what it manages, when you need it, and how it fits with Microsoft 365.
Inside this guide
- Intune in one sentence
- Why small businesses look at Intune
- What Intune can manage
Cyber insurance requirements for Australian SMBs
What Australian small businesses are typically asked before cyber insurance is approved — MFA, backups, email security — and how to prepare without panic.
How to choose an MSP in Melbourne
A practical checklist for Melbourne business owners comparing managed IT providers — scope, security, response times, and exit terms.
- Start with your actual stack
- Compare scope, not just per-user price
Fix SPF for Microsoft 365
Stop legitimate email bouncing or landing in spam by getting your SPF record right for Microsoft 365.
- Why SPF matters
- The Microsoft 365 include
What is Bufferbloat and How to Fix It
Slow video calls? Fix bufferbloat for fast internet. Book a free IT assessment with MrTech Melbourne.
What you will learn
- 1Idle ping vs loaded latency
- 2Why bufferbloat matters
- 3How to fix bufferbloat
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
Set up DMARC for your business
Move from none to quarantine with a policy that protects your domain from spoofing without breaking legitimate mail.
Microsoft 365 onboarding checklist
The setup steps most small businesses miss — identity, email, devices and security in the right order.
- Identity first
- Email and DNS
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
Why is my website slow?
Hosting, images, scripts and caching — the usual suspects behind sluggish load times and poor Core Web Vitals.
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
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.
Domain expiry and DNS basics
How registration, nameservers and records fit together — and how to avoid your site and email going dark overnight.
- Registration vs DNS hosting
- Records you should know
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
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.
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
Essential Eight for small business
What the ACSC Essential Eight maturity model means in practice — and a realistic path for Melbourne SMEs.
What you will learn
- 1What the Essential Eight is
- 2Start where attackers start
- 3Microsoft 365 mapping
- 4Realistic roadmap
Microsoft 365 security checklist
A practical checklist for Entra ID, Exchange Online, SharePoint and Teams — the settings Melbourne admins most often miss.
- Identity and access
- Email and collaboration
Email security best practices
Reduce phishing, spoofing and invoice fraud with authentication, filtering, and habits your team can maintain.
Website design cost in Melbourne
What drives quotes for business websites in Melbourne — templates, custom builds, ongoing support, and realistic budgets.
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
Why business websites get hacked
The common causes — outdated plugins, weak passwords, bad hosting, and missing patches — and how Melbourne businesses reduce risk.
- It is rarely “random”
- Top causes we see
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.
What you will learn
- 1OneDrive is personal work storage
- 2SharePoint is team and company storage
- 3Typical Melbourne SMB pattern
- 4Governance basics
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
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
Microsoft 365 vs Google Workspace
A practical comparison for Melbourne businesses choosing email, files, and collaboration — strengths, trade-offs, and migration effort.
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
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
A, CNAME, MX and TXT records explained
The DNS record types every Melbourne business touches — what each one does and common misconfiguration mistakes.
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
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
Cloudflare DNS for small business
When Cloudflare helps with speed and security, what the orange cloud means, and pitfalls for email and Microsoft 365.
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
What is DKIM?
How DKIM signing proves your email is authentic — and how to check it is working for Microsoft 365 and other senders.
What you will learn
- 1DKIM in plain language
- 2How it differs from SPF
- 3Microsoft 365 setup
- 4Verify after changes
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.
- SPF — who may send
- DKIM — message integrity
Why does business email go to spam?
Authentication failures, reputation, content, and list hygiene — how Melbourne businesses improve inbox placement.
Shared mailbox vs distribution list in Microsoft 365
Which to use for info@, sales@, and team inboxes — licensing, replies, and permissions explained.
- Distribution lists (groups)
- Shared mailboxes
Business email compromise (BEC) — what to know
Invoice fraud, payroll redirection, and fake CEO requests — how Melbourne businesses reduce BEC risk.
How to enable DKIM in Microsoft 365 (step-by-step)
The exact admin centre steps to turn on DKIM signing for a custom domain in Microsoft 365 — CNAME records, propagation and how to verify it worked.
- Before you start
- Enable DKIM and get your CNAME records
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 you will learn
- 1What a VPN does
- 2When VPN still makes sense
- 3When to skip full-tunnel VPN
- 4Security basics
Guest Wi‑Fi security for offices
How to offer visitor internet without exposing printers, servers, or staff devices on the same LAN.
- Why guest Wi‑Fi must be separate
- Simple architecture
Why is my office internet slow?
ISP plans, Wi‑Fi coverage, bufferbloat, and LAN bottlenecks — how to diagnose sluggish business connectivity.
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.
- Ethernet wins on stability
- Wi‑Fi wins on flexibility
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
Secure remote access for hybrid teams
Beyond VPN — conditional access, MFA, and cloud-first patterns Melbourne businesses use for staff working from home.
- Cloud-first default
- When the office LAN is still needed
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