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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...

Zimbra SSL/TLS Commercial Certificate

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...

Zimbra Best Practices: Improve outgoing Email Security

Today, in this article, we want to cover an interesting aspect to be considered once you have Zimbra installed: how to improve the security of the emails you send. Zimbra...

Zimbra Best Practices: Incoming Mail Protection

I believe that one of the most important aspects related to e-mail is security management, both in terms of possible attacks, such as malware or viruses, and in terms of...

MTA: A General Overview

Mail Transfer Agent (MTA) is a software that transfers e-mail messages from one computer to another via SMTP. Mail Routing Scenarios We want to introduce you to some pretty common...

The importance of keeping Zimbra constantly updated

Today we want to talk about a very important aspect that should not be underestimated when using Zimbra OSE and Zextras Suite: upgrading.Many of you will wonder why it is...

Enabling CBPolicyD WebUI

How to Install/Enable CBPolicyD WebUI in Zimbra Activating CBPolicyD Before using CBPolicyD, you must have CBPolicyd installed and enabled in your Zimbra server. To install and enable it login to...

How to setup SNI in Zimbra OSE?

In this article, you will learn about the SNI setup in Zimbra. It would be important for you to set up Zimbra SNI as you can serve your users not...

What is SNI in Zimbra OSE?

In this article, you will learn about SNI and Zimbra SNI. It would be important for you to set up Zimbra SNI as you can serve your users not being...

Postscreen Attributes Explained

Zimbra Postscreen Zimbra Postscreen is an anti-bot/dos started in Zimbra 8.7. It tackles mail server overload by keeping spambots away and making more SMTP processes available for legitimate clients. Zimbra...

How To Use Zimbra Postscreen?

In this article, you will learn about using and configuring Zimbra Postscreen. Zimbra Postscreen Zimbra Postscreen is an anti-bot/dos started in Zimbra 8.7. It tackles mail server overload by keeping...

What Is Zimbra Postscreen?

In this article, you will learn about Zimbra Postscreen and how it works. Zimbra Postscreen Zimbra Postscreen is an anti-bot/dos started in Zimbra 8.7. It tackles mail server overload by...

How to Verify Your rDNS Record

rDNS Record Verification Assuming you have already created your rDNS record, added it to your DNS, and want to check your rDNS configuration. The rDNS record is stored in DNS...

How to Verify Your DMARC Record

DMARC Record Verification Assuming you have already created your DMARC rule, added it to your DNS, and want to check your SPF configuration. The DMARC record is stored in DNS...

How to Verify Your SPF Record

SPF Record Verification Assuming you have already created your SPF rule, added it to your DNS, and want to check your SPF configuration. The SPF record is stored in DNS...

How to Verify Your DKIM Signature

DKIM Signature Verification for Outgoing Emails Assuming you have already created your DKIM data, added them to your DNS, and want to verify your DKIM configuration for signing outgoing emails....

How To Configure Zimbra rDNS?

The rDNS or reverse DNS resolves the domain name associated with an IP as opposed to DNS which resolves the IP associated with a domain name. This can be used...

How To Configure Zimbra DMARC?

DMARC or Domain-based Message Authentication, Reporting, and Conformance is an email authentication, policy, and reporting protocol that defines how your email servers should manage your SPF and DKIM. DMARC protects your domain...