Latest Articles
Protecting Mail Server from Overloads Using Postscreen in Carbonio Community Edition | Carbonio CE
Despite the emergence of numerous instant messengers, it is email that is by far the most inexpensive way to send information, and given that emails support attachments in the form...
Understand And Manage Password Policy In Carbonio Community Edition | Carbonio CE
An email server contains several layers of security. As a system admin you may be familiar with all of them but we can not expect this expertise from a regular...
How to Work with SpamAssassin in Carbonio Community Edition | Carbonio CE
Despite the emergence of numerous instant messengers, it is email that is by far the most inexpensive way to send information, and given that emails support attachments in the form...
How To Deal With Outbound Spamming In Carbonio Community Edition | Carbonio CE
One fine summer afternoon, you found that one of your users account has become compromised and it has been generating huge amount of SPAM mails. In this article, we will...
Installation Of SSL Certificate On Zimbra Server | Zimbra
In modern days, data security is prioritized with great concern. Most system admins are concerned with their email server security from both inside/outside threats. As threats evolve, so does the...
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...
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...
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...
In Blog
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...
In Blog
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...
Native Packaging vs. Installers – Secure Installation of Carbonio Community Edition | Carbonio CE
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...
In Blog
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...
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...
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...
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....
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...
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...
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...