Vdirsyncer is a command-line tool for synchronizing calendars and addressbooks between servers such as Zimbra and Nextcloud or any server that supports open standards such as CalDAV/CardDAV. Aditionally Vdirsyncer support Google Calendar and Google Contacts. While vdirsyncer excels at migrating calendar and address book data, it’s worth noting that email data migration can be achieved […]
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Custom SpamAssassin Rules in Zimbra
In this article you will learn how to add custom SpamAssassin Rules to Zimbra. This way you can filter email that may have fooled your spam filtering or mitigate vulnerabilities such as CVE-2024-21413 where file:// hyperlinks cause problems in MS Outlook. SpamAssasin localrules In this example we are going to filter email that contains the […]
NEW! Patch Release: Improved Language Support, Modern UI, Distribution Lists & Other Security Enhancements
Patch Security Severity: Low Deployment Risk: Medium This release focuses on improving user experience, enhancing group communication and essential security for the following editions Zimbra Daffodil 10.0.7 (Release Notes) Zimbra 9.0.0 Kepler Patch-39 (Release Notes) Patch updated on 28 Feb include the following in their respective releases What’s New Improved Language Support (Zimbra Daffodil) OnlyOffice […]
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 […]
Manage Global S3 Configurations using zms3config CLI
In a previous blog we introduced Zimbra’s new Storage Management, in this article we introduce you to zms3config a command line application that allows you to manage Zimbra’s S3 configuration. The zms3config is the CLI utility to manage the Global S3 buckets which can be shared across mailstore nodes. Bucket configurations can be created from any node […]
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 […]