Security

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Understanding SPF Records | Zimbra

SPF is in action for quiet a long time. The very basic function of SPF is to authorize a sender on behalf of a domain. But why did we need...
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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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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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Carbonio Chat – GDPR Compliant Enterprise Instant Messaging service for Data Controllers | Blog

In this article, you'll find out why Zextras Carbonio's instant messaging service, aka Chats, is a perfect fit to comply with GDPR and how it meets all the legal obligations...
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Why Data Sovereignty Should Matter to Us All | Blog

Rise of cloud computing and the increase in the number of companies adopting this technology to offer services to users, draw more criticism about data privacy. Especially all sorts of...
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Native Packaging vs. Installers – Carbonio Secure Installation | Carbonio

Software programs in the source code have to be compiled and built first in order for the consumes to easily install and use. Software packaging within the various Linux distros...
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Yet Another Step Towards An Open-source Future: German State Adopts Open-source Solutions For Public Administration And Schools | Blog

Schleswig-Holstein – a state in northern Germany – tries to separate its path from the tech giants by replacing Microsoft’s products in the public sector and schools switching completely to...
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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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SpamAssassin | Zimbra

Regarding spam protection strategies in Zimbra, a mention deserves SpamAssassin, an Open Source anti-spam platform that can provide system administrators with a filter that can classify emails and block spam....
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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 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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Zimbra Black List and White List | Zimbra

Speaking of email security and spam, there are many factors to consider as we have seen in the incoming and outgoing mail protection best practices articles. Surely, however, we can...
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Improve the security using Zextras 2FA | Zimbra

Security is not an option. Unfortunately, many companies meet security only after an attack has been received, or when they have to limit the damages of a data breach. Security...
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Setting up a password security policy in Zimbra

Along with encrypting emails and using digital signatures, one of the most effective and low-cost ways to protect email from hacking is a competent password security policy. Passwords written on pieces...
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Zimbra SSL/TLS Commercial Certificate | Zimbra

Nowadays the use of an SSL (or even better TLS) system to protect your connections has become almost a must. We have seen in this article what SSL certificates are...
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