Guides, tips and solutions for your everyday IT
Short, concrete guides for everyday IT problems. Filter by category to find what you need.
DMARC: tell the recipient what to do with forged email
SPF and DKIM detect forgery. DMARC is the record that decides what the recipient does about it.
EmailDKIM: sign your email so the recipient knows it's real
A digital signature that reveals if a message was tampered with in transit, and survives forwarding.
EmailSPF: say who's allowed to send email as you
Without an SPF record, anyone can send email that looks like it came from your domain.
SecurityThe 3-2-1 backup rule, explained simply
One rule that protects against almost everything that can go wrong with your data, without the technical jargon.
SecurityPassword managers: stop reusing passwords
Reused passwords are the most common cause of a breach, and the easiest one to fix.
NetworkQuick test: does your firewall survive a basic port scan?
A free, five-minute test that shows what's actually visible from outside your network.
Microsoft 365How to share a calendar in Microsoft 365
The right way to share a calendar with colleagues, without handing over more access than necessary.
SecuritySecure your office Wi-Fi in 10 minutes
Four quick settings that close the most common gaps in an office Wi-Fi setup.