How To Enable Server Backups in WHM/cPanel

Reading Time: 5 minutes

The most important thing you can do to protect your server against data loss is to take regular backups. Properly configured backups are a critical aspect to the maintenance of any website and can mean the difference between a quick recovery and rebuilding a site from scratch. If a critical file were to be deleted accidentally, a database became irreparably corrupted, or your site was infected with malware, would you be able to restore your data and get your site back up within a few minutes? 

If you can’t answer “yes” to these questions, then it’s time to review your backup strategy.

Continue reading “How To Enable Server Backups in WHM/cPanel”

Installing cPanel/WHM On CentOS 6 & 7

Reading Time: 5 minutes

What is cPanel? 

cPanel is a server control panel which allows users the ability to access and automate server tasks and, provides the tools needed to manage the overall server, their applications, and websites. CPanel_logoSome features include the capability to modify php versions, creating individual cPanel accounts, adding FTP users, installing SSL’s, configuring security settings, and installing packages to name a few. cPanel and WHM have a vast range of customizations and configurations that can be completed to further personalize your platform specifically for your needs.  It also includes 24/7 support from cPanel as well.

When purchasing a server from Liquid Web, we offer several images your server can be built from.  We offer these images on most of our hosting products, including, dedicated servers, cloud dedicated servers, and our VPS offerings.  Another bonus is that cPanel is supported out of the box on our fully managed servers. Our staff is well versed in providing assistance as well.  Our automated install process will install and setup cPanel on your server. If you happen to have a cPanel license or are utilizing cPanel’s free trial, then please continue reading as we will be discussing how to install and setup cPanel on a CentOS 6 or 7 Linux box.

Continue reading “Installing cPanel/WHM On CentOS 6 & 7”

Python Web Applications In cPanel On CloudLinux

Reading Time: 2 minutes

Functionality for Python web applications can lead to increased profitability as a result of a broader offering of technologies to any current or future customers.

The Python Selector in cPanel on CloudLinux allows multiple versions of Python to run on a per-application basis. The versions of Python available to the selector is dependant on the installed Python versions. The steps below will outline installing all of the currently available versions of Python.

Continue reading “Python Web Applications In cPanel On CloudLinux”

How to Use the Mail Queue Manager in WHM

Reading Time: 3 minutes

The Mail Queue Manager feature in WHM allows you to view, delete, and attempt to deliver queued emails that have not yet left the server. It can be a handy tool for diagnosing a variety of issues with mail deliverability, such as spotting signs of a compromised account sending spam from the server.

Accessing Mail Queue Manager in WHM

If you are unfamiliar with how to access WebHost Manager (WHM), you can take a look at our article Getting Started with WHM.

Once logged into WHM, you can navigate to the Mail Queue Manager page by inputting the text “mail queue” into the search box above the left menu, then click the Mail Queue Manager option:

mail queue manager link in WHM

Searching for Queued Emails

From the Mail Queue Manager main page you will see a section for searching through these queued emails. You can input either a Sender, Recipient, or Message ID (a unique identifier the mail server gives each email sent and received) to filter through the queued messages.

Once you input a search for one of these options, select the corresponding option from the Select Query dropdown menu next to the text box: Search Sender, Search Recipient, or Search Message ID.

You can also select No Filter if you do not want to restrict the search to one of these specific options.

The search filter also includes a section to select a particular time frame by entering a Start Date and End Date. This will filter the search results down to emails that fall within this time frame. Please note: WHM only retains this data for 10 days, so email outside of that time frame will not be included in the search results.

Once you’ve input the text to search, and selected the filter options, click the Run Report button.

Below is an example of a search for all messages in which the sender of the email matches “user@domain.com”:

mail queue search screenshot

Viewing Queued Emails

To view an email currently in the queue, under the Actions column, click the magnifying glass icon:

example of email in the mail queue

This will display the email’s simple headers, text content, and provide you with options to delete the email, attempt delivery, download the email in .eml format (which you can open in mail client applications such as Microsoft Outlook), or view the email’s extended headers and control data:

example of email header detail in the mail queue

Delivering Queued Emails

As shown above, you can view a specific email and click Deliver Message Now to attempt delivery of the message. You can also select messages from the main page of the Mail Queue Manager and click Deliver Selected:

detailed view of the mail queue

The option Deliver All will attempt to send out all emails currently in the queue.

Deleting Queued Emails

To delete an email currently in the queue, you can view a specific email using the instructions above and then click Delete Message.
Multiple emails can be deleted from the queue using the main page of the Mail Queue Manager. You can either select each email you’d like to remove and then click Delete Selected, or you can remove all queued emails by clicking Delete All.

Unfreezing Frozen Queued Emails

You may see emails listed as Frozen under the Status column. These are emails that failed to deliver after multiple attempts, so in order to help the queue continue to run efficiently, the system will ‘freeze’ these emails. To unfreeze an email, you can click the second icon under actions:

frozen email in the mail queue

Once unfrozen, the email will attempt to send during the next queue run. Forcing a delivery attempt of a frozen email will also unfreeze the selected email.

Multiple frozen emails in the queue may indicate an issue that requires further investigation, such as a remote mail server blocking the mail transaction.

For more information on diagnosing email deliverability issues, you can take a look at our article entitled Troubleshooting: RBLs and Email Delivery Problems (Rejected Email Messages).

Enabling Let’s Encrypt for AutoSSL on WHM based Servers

Reading Time: 2 minutes

With the recent release of cPanel & WHM version 58 there has been the addition of an AutoSSL feature, this tool can be used to automatically provide Domain Validated SSLs for domains on your WHM & cPanel servers.

Initially this feature was released with support provided for only cPanel (powered by Comodo) based SSL certificates, with the plans to support more providers as things progressed. As of now, cPanel & WHM servers running version 58.0.17, and above, can now also use Let’s Encrypt as an SSL provider. More information on Let’s Encrypt can be found here. Continue reading “Enabling Let’s Encrypt for AutoSSL on WHM based Servers”

Apache Performance Tuning: Configuring MPM Directives

Reading Time: 3 minutes

 

Our previous article in this series focused on defining and fitting MPM to match your environment.  Building off of our last tutorial we will be discussing specific details on how to adjust the previously mentioned Apache configuration directives on the various types of Liquid Web servers

Continue reading “Apache Performance Tuning: Configuring MPM Directives”