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How To Prepare An OS For Zimbra Installation | Zimbra

The pre-Zimbra installation phase is no fun. That’s why everyone wants to wrap up this phase in no time. But a little planning in this phase can make our server...
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An Introduction to Carbonio Community Edition System Logs | Carbonio

Like any enterprise-class mail server, Carbonio CE carefully captures in a special log all actions occurring on the server, from sending emails and logging in to user accounts, ending with...
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How to Properly Set Up Firewalls on Zimbra Servers | Zimbra

A firewall is a network security mechanism that monitors incoming and outgoing network traffic and permits or blocks data packets based on a set of security rules. Its purpose is...
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Free SSL Certificates for Carbonio Community Edition Using Let’s Encrypt and Certbot | Carbonio

A public-key certificate is an electronic document that provides a reliable way for an entity to prove its identity. A trusted organization that issues these public-key certificates is known as...
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How to Manage Multiple Domains in a Zimbra Server | Zimbra

A few years back, things were quite simple. Each organization acquires a domain to establish its virtual identity. Virtual identity includes their company website, company email service, etc. Over time,...
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How to Set Up a Static IP Address on Ubuntu Server | Carbonio

The previous article showed you how to deploy a Carbonio server in a demo environment. It was meant for testing purposes and used dnsmasq to resolve A and MX records....
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How to Install Your DNS Server Using Dnsmasq for Carbonio CE Test Environment | Carbonio

A DNS server becomes very handy on several occasions where you need to define your DNS, disable the automatic DHCP server, and use a static IP. This guide can also...
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Real-time Backup and Restore for Zimbra – System Administrators’ Most Requested Features | Zimbra

Zimbra OSE is a complete email solution. It offers lots of customization compared to G Suit and M365. Still, it needs some attention from the system admins perspective. We think...
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How To Maintain Your Zimbra Servers After Soon-coming CentOS End-of-life | Zimbra

In December 2020, an announcement of Redhat shocked the whole tech world. CentOS, one of the most stable open-source OS will not release any stable version of it after CentOS...
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How Do Antispam and Antivirus Protection Works in Zimbra OSE? | Zimbra

These days the world is dealing with a different kind of threat. You may have heard the term called “Mail borne threat”. Usually a network/system administrator is concerned about end...
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Best Authentication Methods for Zimbra – System Administrators’ Most Requested Features | Zimbra

Zimbra OSE is a complete email solution. It offers lots of customization compared to G Suit and M365. Still, it needs some attention from the system admins perspective to make...
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Zimbra OSE Backing Up And Restoring Process | Zimbra

In my future series of articles onmost requested features by Zimbra admins, I will discuss the details about the advantage and disadvantages of various manually created backup and restoration process...
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Monitoring Zextras Docs using Prometheus | Zimbra

Collect and correctly display metrics is the best (sometimes the only) way to understand how single software components or the entire infrastructure is working and performing. You can use the...
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Firewall ports in Zimbra | Zimbra

One of the main weapons of modern cybercriminals is the port scanner, thanks to which they find servers that are susceptible to certain vulnerabilities and then attack them. That is...
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How to setup External Active Directory Authentication | Zimbra

With this article we are going to see how to configure, through the administrative interface, the external authentication to Active Directory in Zimbra. Configuration After logging in to the AdminUI,...
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How to install and update Let’s encrypt for Zimbra | Zimbra

Using certificates to secure your data and mail traffic is something that is extremely important. We have seen, in the " Zimbra SSL/TLS Commercial Certificate " article, how they work...
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Zimbra Collaboration Suite and Anti-Phishing | Zimbra

Let's get back to dealing with security and especially email security, going to address a delicate and extremely important topic like Phishing and see what measures can be taken in...
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Enterprise Security black, white and gray lists | Zimbra

Zimbra incorporates a spam filter that allows you to reliably protect your company's mail from receiving infected messages that are not related to business correspondence. We've seen how to manage...
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