From the blog

List all IMAP and POP email accounts on a cPanel server

This is a quick hack to list all IMAP and POP email accounts on a cPanel server, from all the existing domains. If you ever need to list all your mail boxes that are currently working with the IMAP or POP3 protocol, then run this scripts: To get all your IMAP mailboxes cat /var/log/maillog | zcat /var/log/maillog-* |…

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SMTP AUTH is required for message submission on port 587 – Error and Fix

If you are getting this error message on some of your Email forms via PHP, there is a chance your script is not working with secure authentication via SMTP. SMTP AUTH is required for message submission on port 587 That’s one of the ways to prevent spam issues on your server. However, if you can’t update your code and need…

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How to: Disable Strict Mode in MySQL 5.6 on cPanel/WHM servers

While upgrading to MySQL 5.6.x on a cPanel server, one of our sysadmins noticed that MySQL automatically enabled Strict Mode on this new version. This made a few webpages offline while requesting SQL data. This pages needed to have sql stric mode off in order to work. Today we will learn how to Disable Strict Mode in MySQL…

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How to fix: Warning: fd limit (ulimit -n) is lower than required under max. load

This happened on a recent cPanel server. Dovecot was showing this error message while restarting the service: Starting Dovecot Imap: Warning: fd limit (ulimit -n) is lower than required under max. load The fix was quick and easy. You just need to reconfigure dovecot and rise the file descriptor limits. Edit dovecot configuration file: nano -w /etc/sysconfig/dovecot Add this…

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How to increase Swap size on CentOS + cPanel

Today you will learn how to increase Swap size on Linux systems, this applies to CentOS Linux and cPanel based servers. Sometimes our swap memory size is too small, and once your swap is totally consumed, you will face really slow speeds on your server because your RAM + Swap will be fully used. But hey, what’s Swap…

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How to Free up disk space on cPanel servers

Sometimes our servers include small hard drives or our users simply consume lot of disk space. In this situations when your drives are pretty close to be totally full, you may end up having writing error on partitions like /home /tmp or /boot. That’s why today we will teach you How to Free up disk space on cPanel servers. This…

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How to know if I have an SSD drive or HDD?

Sometimes our dedicated servers come with Solid State Drives, but… how can you really know that what’s inside your box is an SSD or a HDD drive? On this post you will find ways to know if I have an SSD drive or HDD running inside my box. As we all know, SSD drives are really well in terms…

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