The “Referer” header is a HTTP header that is added by the web browser whenever a request is made. A Zimbra user who receives an email with links or images in the Zimbra web interface may unknowingly share information of the Zimbra server when clicking the link or viewing inline-images. For example when an email […]
Archive | Product News
Introducing Zimbra Microsoft Teams integration
Teams Power is an integration with Zimbra and Teams and is provided via Innovazionedigitale. With this integration customers using Outlook with a 365 subscription can use Teams from both the Zimbra calendar and Microsoft Outlook. The integration is available for Zimbra Classic and Modern UI on Zimbra 8 and above. More information on this Zimlet […]
Protecting Zimbra with Sucuri web application firewall
By Barry de Graaff on January 11, 2023 in Product News, Partners, PowerTips – Admins, Security & Privacy
You can enhance the security of your Zimbra servers by using a web application firewall (WAF). By using a web application firewall you can add the following protections to Zimbra: Geo blocking, geo fencing Blocking or allow IP addresses Emergency DDoS protection Block anonymous proxies Block top three attack countries Manage HTTP Security Headers Limited […]
Did you know? Zimbra Postscreen provides additional protection against mail server overload
In Zimbra you can optionally enable Postscreen as an additional Anti-SPAM strategy. Postscreen will offer additional protection against mail server overload. One postscreen process handles multiple inbound SMTP connections and decides which clients may talk to a Post-fix SMTP server process. By keeping spambots away, postscreen leaves more SMTP server processes available for legitimate clients […]
Did you Know? Zimbra Desktop Auto-Archive feature and more
By Carlos Pineda on December 21, 2022 in Product News, Did You Know, PowerTips – Users, Zimbra Desktop
Do you check your emails when you are traveling? Do you have intermittent internet access? Zimbra Desktop provides a seamless way to access your Zimbra content when connectivity is limited. It’s an app that you install on your computer (Windows or Mac) so you can read your emails, reply or forward an email, compose new […]
Update Zimbra TLS cipher suites to disable Diffie-Hellmann
This blog post is outdated since Zimbra version 9.0.0.P34, 8.8.15.P41, 10.0.2 where Zimbra introduced OpenSSL FIPS. Please follow the updated steps at https://wiki.zimbra.com/wiki/Cipher_suites. In a previous blog and wiki we have shown how to configure Zimbra with a strong TLS configuration. Since encryption is always evolving we have updated the previous blog and wiki to […]