Mandrill is a transactional email service run by MailChimp, comparable to SendGrid. It comes stock with a powerful API for fast implementation into applications for sending email reliably over SMTP, but it can also be used as a smart host for all of your server’s outgoing email. The below instructions cover how to do this…
Read moreWhen trying to change a user’s shell via WHM, you may occasionally see the following error: Shell could not be modified As shown below: Attempting to change the shell via command line fails as well: # chsh -s /bin/bash myuser Changing shell for myuser. setpwnam: File exists Shell *NOT* changed. Try again later. This means there is a…
Read moreIn 2010, we released our first cPanel cheat sheet for version 11.25. Admittedly, we haven’t been keeping up with the times. A lot has changed with cPanel over the last few years and an update is well overdue. Though labeled for version 11.42, the new cheat sheet is verified to be accurate for the following…
Read moreThere comes a time in every sysadmin’s life where filesystem errors just…happen. Luckily, these are somewhat easy to fix, assuming you don’t have a greater problem involving physical hardware damage. First, you need to know the name of the disk device having the problem. Do a quick df to see what device the affected partition…
Read moreIf you’re running CentOS, you’re probably a few versions behind on Python. Currently, the version packaged for CentOS 5 and 6 is 2.6. Contrary to what the title of this post implies, you actually cannot safely upgrade Python on any Redhat distribution. If you’re feeling brave, try this to see why: yum remove python Warning,…
Read moreSetting up your cPanel server to send through a third-party mail server is very easy to do, if you understand the basics of how cPanel builds its Exim configs. You never want to edit your exim.conf file directly – your changes will be wiped out any time a cPanel update runs or someone makes a…
Read moreIf you are running cPanel 11.28 or higher (which we hope you are, considering the current release at the time of this writing is 11.40!), you have the option in WHM to automatically disable DNS clustering if too many connection failures occur: While this can be a handy feature, if you have a…
Read moreThere are some situations where you may need to set up multiple shared IP addresses on a server. Some reasons may include grouping accounts per IP or lowering the effect of DDoS attacks if it becomes necessary to block traffic to a specific interface. Whatever the reason, multiple shared IP addresses on a cPanel server…
Read moreUpdate: cPanel is no longer supported by cPanel for CentOS 7 or newer. It is recommended that you use cpanel4j. The below instructions are no longer relevant for CentOS 6 or older servers, since cPanel now includes Tomat 7 in EasyApache 3. CPanel has soon promised that Tomcat 7 will be supported in a future…
Read moreSince the release of cPanel 11.32, the cPanel update process has extended OS checks to ensure that you are only updating cPanel on a compatible system. Specifically, you can no longer upgrade past version 11.32 on CentOS 4, or 11.30 on Redhat 9. Trying to do so will verbosely inform you that the upgrade is…
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