5 Ways to Get a User’s Disk Usage

This may seem pretty simple, but I see a lot of questions about how to get a user’s disk space usage on a cPanel user. I put together a quick list of 5 simple ways for the average admin:   1) Good ole’ cPanel/WHM. You can see the usage on the left-hand side of cPanel,…

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User Databases Missing from cPanel

After upgrading to cPanel 11.28, a number of our users indicated that databases were missing from their cPanels, despite the actual databases existing on the server. There are a number of things that can cause this, including corrupted Perl modules and MySQL not running, but the major cause that I’ve seen is from the new…

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Exim Privilege Escalation in 4.69-23

The cPanel security team found an issue in Exim that can potentially allow a user on the system to potentially run commands as the root user. Luckily, cPanel has already released a patch which is available for immediate download via their Exim upgrade script. If your system is set to update cPanel automatically, you may…

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Tips to Reduce Your Customer Support Costs

When hosting websites, whether as a mainstream hosting provider, a hobby, or to supplement another service, it’s your job to make sure your customers have access to technical support in case they need help. Customer support is one of the highest expenses that a web host can encounter. Just my making a few small changes,…

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That Huge .cpan Folder in /Home

A common question we get from cPanel administrators is whether it’s Ok to remove /home/.cpan¬†since, on many servers, it tends to grow to a size exceeding 1G. The short answer is yes – installation files. If you find that yours is occupying too much disk space, delete it, and run the following commands: perl -MCPAN…

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Dealing With Hacked Sites

This article will not go into detailed technicalities on identifying, troubleshooting, tracing, and fixing hacks. These topics are far too broad to cover in a single article, and is outside the scope of this article’s intent. This guide is to help you, the system admin, come up with a plan to handle situations involving breached…

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Localdomains vs. Remotedomains

Have you ever dealt with a user that pointed their MX records to another server but email from their website or other users on the same server isn’t going there? This is because Exim on is configured to use files called localdomains and remotedomains, which tell Exim whether a domain’s email is hosted locally or…

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