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Testing IMAP, POP3 and SMTP by hand with openssl s_client: a guide for technical users

This article is for technical users with a command line (Linux, macOS, or Windows with OpenSSL). The short answer: openssl s_client opens an encrypted connection to the server and lets…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseSpeed, Cache & CDN

AutoSSL behind Cloudflare: why the free certificate leaves names out or fails to renew

The short answer: the server’s free certificate (cPanel’s AutoSSL) is still needed with Cloudflare in front: it protects the leg between Cloudflare and the server in Full (strict) mode, and…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseVPS & Servers

Your first hour on a new Windows VPS: updates, users, firewall and backups

The short answer: a new Windows VPS is ready to use but not ready to expose. In the first hour there are six things to do, in this order: change…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseVPS & Servers

HestiaCP and VestaCP on a VPS: what the panel gives you and what stays your job

This article is for people with a VPS or a dedicated server with root access. On shared plans the panel is cPanel, and you neither choose nor install another one.…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseVPS & Servers

No space left on device: finding what fills your VPS disk

The error No space left on device means one of two things: the space has run out, or the inodes have (the number of files the disk will accept). Check…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseVPS & Servers

Installing CloudPanel on your VPS, step by step: a free panel for PHP, Node and Python apps

The short answer: CloudPanel is a free control panel, with no licence, built for PHP sites (WordPress included), Node.js and Python apps, and static sites. It installs on a clean…

MozOut - United Kingdom www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseSecurity

Your server IP on a spam blacklist: finding the source and getting off Spamhaus or SpamCop

This article is for customers with a VPS or a dedicated server, with root access. If you have a hosting plan, start with your domain or IP is on a…