Altn Technology blog · Practical IT guides
IT guides & insights for growing businesses
Plain-English guides on business email, cybersecurity, servers and hosting, written by the engineers who manage IT for companies across India, the USA and Africa.
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Secure Work From Home Setup: IT Checklist for Remote and Hybrid Teams
Remote and hybrid work is here to stay, and so are the risks. This checklist covers secure remote access, MFA, laptop protection, cloud collaboration and remote…
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What Is DKIM? DomainKeys Identified Mail Explained (Setup Guide)
DKIM adds a tamper-proof digital signature to every email you send. Learn how it works, how to switch it on in Google Workspace, Microsoft 365 and…
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What Is SPF? Sender Policy Framework Explained (With Record Examples)
A plain-English guide to Sender Policy Framework: how SPF records work, copy-ready examples for Google Workspace and Microsoft 365, the 10-lookup limit and the mistakes that…
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Google Workspace vs Microsoft 365 vs Hosted Email: Which Is Best for Your Business?
Gmail or Outlook? A full office suite or just reliable mailboxes? We compare Google Workspace, Microsoft 365 and hosted business email side by side, with clear…
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Dedicated Server vs VPS: Which Hosting Should Your Business Choose?
VPS or dedicated server? We compare performance, security, cost and scalability in plain language, show which workloads suit each, and explain when it is time to…
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Server Monitoring Checklist: 15 Metrics Every Business Should Track
Most server outages give warning signs hours or days in advance. This checklist covers the 15 metrics to monitor on Linux and Windows servers, sensible alert…
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Business Firewall Guide: How to Choose a Next-Generation Firewall (NGFW)
Your internet router is not a security system. This guide explains what a next-generation firewall does, how to size one for your office, which brands to…
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