This Modern UI Zimlet implements the reading and setting of the Sensitivity header RFC2156, it is implemented the same way as in MS Outlook, mainly to keep it consistent. For the Classic UI version take a look at https://github.com/Zimbra/confidential-header-zimlet. Configuring Zimbra To allow the setting of the Sensitivity header one must enable it on the […]
Archive | Open Source
Setting email headers from Zimlets using the ONSEND event and Redux
Are you looking to add extra headers to emails in Zimbra? This can now be done in Modern UI using Zimlets. In this article we will introduce you to the newly added SendCustomHeaderMessage component and guide you through the use of Redux by means of an example Zimlet. What are Zimlets? Zimlets are add-ons that […]
Automatically deploy and update Zimbra Connector for Outlook using OPSI
OPSI, which stands for Open PC Server Integration, is an open-source software deployment and management solution designed primarily for Windows-based networks. It provides a comprehensive suite of tools for automating software deployment, patch management, inventory management, and system configuration across multiple computers in an organization’s network. OPSI is often used for rolling out Windows workstations […]
How to implement (external LDAP) authentication in a Zimbra Java Extension
Frequent readers of the Zimbra blog will know that Zimbra can be extended/customized by using Zimlets. By creating your own Zimlets you can add functionality to the UI (front-end) and the Java back-end, allowing you to cater to specific customer needs. Zimlets can be enabled globally or per user (group) Details on this can be […]
Mobileconfig in Settings menu Zimlet
This Zimlet adds a menu option in the Settings menu to download mobileconfig file to configure your Zimbra account on Apple devices. The same is included in Modern UI by default under Settings->Accounts then expand your account and scroll down. This Zimlet exposes the feature more prominently and makes it easier to find. You can […]
SMTP Smuggling in Zimbra Postfix a technical deepdive
E-mail providers like Microsoft Exchange Online and GMX allowed to pass <LF>.<CR><LF> sequence unfiltered from their outbound (sending mails) SMTP server to the inbound (receiving mails) SMTP server (postfix in our case). In the case of Postfix serving as an outbound/inbound (sending mails/receiving mails) server, it does not ignore the sequence ‘<LF>.<CR><LF>’; rather, it interprets […]