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Zimbra OSE

Latest Articles

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...
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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...
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How To Configure Zimbra SPF to Check Incoming Emails?

SPF or Sender Policy Framework is an email authentication method that identifies which mail servers are allowed to send emails on behalf of your domain. I can forge an email header to...
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How To Configure Zimbra SPF for Outgoing Emails?

SPF or Sender Policy Framework is an email authentication method that identifies which mail servers are allowed to send emails on behalf of your domain. I can forge an email header to...
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How To Configure Zimbra DKIM to Check Incoming Emails?

DKIM or DomainKeys Identified Mail is an email authentication method that tries to identify email spoofing attempts (creation of email messages with a forged sender address). DKIM enables you as the receiver of the email to verify...
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How To Configure Zimbra DKIM to Sign Outgoing Emails?

DKIM or DomainKeys Identified Mail is an email authentication method that tries to identify email spoofing attempts (creation of email messages with a forged sender address). DKIM enables you as the receiver of the email to verify...
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Email Protection Routines

After installing Zimbra Collaboration Suite, there are some configurations you may want to set up in order to improve the security of sending emails to other email systems. Phishing and...
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Zimbra Upgrade on CentOS / RHEL

Zextras Community
In this little guide we will see how to upgrade (major.minor changes) and update (patches) Zimbra on CentOS / RHEL from an older version (previous to 8.8.15) to the latest...
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Zimbra Multi-Server Installation on Ubuntu LTS

Note: Zimbra contains a set of modules that can be installed on the same server (single server installations) or that can be distributed across multiple servers (multi-server installations). If you...
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ZIMBRA Multi Server Installation on CentOS / RHEL

This article is meant to guide you through a Zimbra Multi server installation on CentOS / RHEL. We will proceed in the following order: Install LDAP server(s)Install Zimbra Mailbox Server(s)Install...
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Zimbra Single-Server Installation on Ubuntu LTS

Zextras Community
Note: Zimbra contains a set of modules that can be installed on the same server (single server installations) or that can be distributed across multiple servers (multi-server installations). If you...
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HOW to Install Zimbra on CentOS / RHEL

Zextras Community
This guide will help you with installation and first configuration of Zimbra mail server on CentOS 7/RHEL 7 or CentOS 8/RHEL 8 for both production or test environment. Before starting...
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