Expert Overview:

# Get rid of "postscreen_cache: unable to get exclusive lock" errors


The current trend in Linux web server OS distributions is for extremely lightweight installation requirements and integration with containers for elastic scaling of big data applications. Rancher and CoreOS both work with Docker and Kubernetes as well as other cloud orchestration platforms like OpenStack, CloudStack, CloudFoundry, OpenShift, Mesosphere, etc. Lightweight OS installations increase the number of virtual machines that can be created on data center hardware, leading to greater efficiency in production environments.
Alternatively, users can configure their Gmail accounts to use POP3 to retrieve mail that is temporarily stored on your VPS. This is sometimes more reliable than forwarding, but the disadvantage is the polling interval can cause incoming mail to be delayed by up to an hour, which is sometimes very annoying. Using POP3 to retrieve mail to a personal PC is even worse - you can easily lose your entire mail archive (because pst files are hard to back up) and you can't access it from a phone.

postscreen_dnsbl_threshold = 1
We wanted to build a website for our business, but felt overwhelmed, confused & scared about how to actually do it or which builder to use. We couldn’t afford to make wrong decisions or expensive mistakes, so after years of trials & errors using different website builders, we’re here to share our experiences with you.Meet the team behind the expert reviews!Contact us
Quick review: AltusHost is a well-known premium hosting provider based in Netherlands. The company provides rock-solid customer support and offer three different server locations in Europe (Bulgaria, Netherlands, and Sweeden). We think AltusHost may be the right call for small businesses and individual bloggers who want a reliable EU-based hosting solution.

For us performance and security are the two pillars of reliability. Our maintenance standards have set us apart from other service providers. We also do not just provide VPS hosting – we provide VPS pools using our resource pool control panel. This allows our users to be in charge of where and how they want their resources allocated, and allows for multiple VPS’s to be deployed all under one provider and one bill!
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The moment you plan on running an online store is the moment you should upgrade your hosting plan. Why? Because with VPS, you have a secure and dedicated virtual server where you are more likely to pass a PCI compliance test. The Payment Card Industry Data Security Standard was established by major credit card brands to protect against cardholder data theft.

A virtual private server (VPS) is ideal for those seeking scalable, reliable hosting resources at a reasonable monthly price. Recently, our team signed up for, tested, and reviewed every major VPS hosting service to find the best combination of uptime, pricing, support, and scalability of all the available VPS hosts. Below are our top recommendations for the best VPS hosting providers:
VMware is also extremely popular in enterprise IT for virtualization, with the ability to run any Linux distribution as well as Windows servers in private, public, and hybrid cloud orchestrations. Unmanaged VPS plans can be installed with Ubuntu, RHEL, Slackware, Debian, Rancher OS, BSD, CentOS, CloudLinux, Windows, etc. as required by the user preferences or project requirements.
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VPS hosting is a great option for anyone who has outgrown the basic features of a shared plan. It’s perfect for small businesses that are steadily growing and gaining more traffic. You get more resources to support that growth and better control over how your site performs. Plus, you can easily adapt the hosting service to meet your needs as they change.
The current trend in Linux web server OS distributions is for extremely lightweight installation requirements and integration with containers for elastic scaling of big data applications. Rancher and CoreOS both work with Docker and Kubernetes as well as other cloud orchestration platforms like OpenStack, CloudStack, CloudFoundry, OpenShift, Mesosphere, etc. Lightweight OS installations increase the number of virtual machines that can be created on data center hardware, leading to greater efficiency in production environments.

That’s really the biggest benefit to migrating from a shared to a virtual server: Your site can grow to receive more visitors without you having to eat the higher cost and hardware responsibility of a dedicated server. VPS users are rarely first-time site owners or folks seeking a personal email server. Typically, the people using a VPS are those whose sites or apps are receiving upward of 100,000 visitors a month.

With dedicated hosting, you rent an entire physical server for your business. If you have a high-traffic website dedicated hosting can be the best solution for you, as dedicated servers are fast, flexible, and fully customizable. However, the service definitely comes with a price tag as well, so they are not worth for everyone, especially if you have a small or medium website.
The most obvious and popular reason for a VPS is to run a single website, or multiple websites. However, you can use them for pretty much anything that requires access to the internet – such as a web application like Nextcloud to run your own Dropbox alternative – or to create your own virtual private network to better secure the internet connection of your PCs and mobile devices.
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