VPS
78 posts
Set Up IPv6 on Your VPS: AAAA Records & Firewall Rules
More networks are IPv6-only or IPv6-preferred than most admins realize, and if your VPS only answers on IPv4, a slice of your visitors are taking a slower path…
Set Up Your Own Mail Server on a VPS: Postfix + Dovecot
Most of the mail guides we publish are about fixing deliverability on an existing mailbox — SPF records, PTR entries, port 25 relays. This one's differen…
VPS Can't Send Email? Fix Blocked Port 25 With a Relay
You SSH into your VPS, fire off a test email from your PHP script or a plain sendmail command, and — nothing. No bounce, no error in the applic…
Set Up a PTR Record for Your VPS Mail Server
If you're sending mail straight from a VPS — Postfix, Exim, or a mail queue behind a Node/PHP app — and messages keep landing in spam or getting rejected outri…
PM2 Process Manager: Keep Your Node.js App Running on a VPS
You SSH in, run node app.js, everything works. Then you close the terminal and the site goes down. Or the VPS reboots after a kernel update and your app just..…
How to Install Docker & Docker Compose on a SkyServer VPS
Docker keeps coming up once you outgrow shared hosting — you need to run a Node app, a self-hosted tool, or a staging environment that doesn't fit cPanel's wor…
Firewalld Guide: Open & Close Ports on AlmaLinux/Rocky VPS
If you provisioned a plain AlmaLinux or Rocky Linux VPS — no cPanel, no WHM, just a bare server — and tried to open a port the way you would on Ubu…
Let's Encrypt Renewal Failing? Fix Common Certbot Errors
Certbot worked fine the day you set it up. The site went green, the padlock showed up, and you moved on. Then three months later a customer emails a screenshot…
Migrate cPanel From CentOS to AlmaLinux Before EOL
If your VPS is still running CentOS 7, you've probably already seen the warning banner in WHM: no more security patches, no more package updates, and a growing…
Resize Your VPS Disk & Extend the Partition (No Downtime)
You bumped your VPS plan up a tier, or added extra block storage, specifically because you were running low on disk. The provider panel confirms it: the disk i…