Plesk Archives

I love Plesk – it’s a work of art that makes my life easier. Rather than a “programme” as such, it’s a web interface that takes control of several thousand services on a web server and makes administering domains and hosting a breeze.

Since 2012 I’ve been a certified Parallels Plesk Automation Technician.

How to reset the admin password in Plesk Onyx

It’s not pretty when it happens, but it happens to the best of us: you forget the admin password for your Plesk Onyx installation.

In previous versions there was an option to retrieve this password via the command line, but that special command has been removed in Onyx for security reasons.

So what can we do? Well luckily it’s relatively easy to reset the password to something else, or gain temporary access to the server quickly. Let me show you how.

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How to install a free SSL Certificate in Plesk Onyx

In this episode I’ll explain how to add a free SSL Certificate for web traffic in Plesk Onyx. First we’ll enable the Let’s Encrypt extension in Plesk, then we’ll create the certificate and prepare our subscription for SSL traffic. And finally, we’ll tweak two values in the WordPress database so that all requests will be … Read more

How to fix “MLSD unable to build data connection” in ProFTP

I’ve come across an odd problem today on a server that’s been working fine for all kinds of FTP traffic for many years. Turns out that today, FileZilla started complaining about explicit TLS connections (when available) and gave the following error message: 425 MLSD unable to build data connection: operation not permitted Clients could still … Read more

How to update Plesk via the Command Line

You can update Plesk via the Web Interface (under Tools and Settings – Updates and Upgrades). However sometimes the interface times out, or browsers get confused – therefore it’s good to know that you can apply updates via the command line interface as well. In this article I’ll show you how (in Linux – I … Read more

How to fix WordPress Media upload trouble caused by open_basedir restriction

I’ve recently migrated a WordPress site from one server to another (running Plesk) and noticed that file uploads were no longer working. All existing files showed up fine, but new uploads were always aborted with a message such as “Is your uploads directory writable?” – which of course it was. Here’s what it looked like – a … Read more

How to open SMTP port 587 to send emails in Plesk

By default Plesk on Linux uses Postfix for outgoing email, and by default listens on port 25 for outgoing SMTP mail. Some service providers do not allow to send emails on that port, and tragedy occurs: clients can’t send email with their Plesk servers. Not good. Other SMTP ports will usually work, such as the … Read more