Hello Zimbra Customers, Partners & Friends, Zimbra’s Barry de Graaff and Randy Leiker from Skyway Networks are teaming up for a new webinar series. These hands-on webinars will include practical how-to information and best practices to help you maximize Zimbra. The first webinar on 8 March focuses on email security and using modern email authentication and encryption. Introduce and […]
Archive | Security & Privacy
Hotfix Available 5 Feb for Zero-day Exploit Vulnerability in Zimbra 8.8.15
Hello Zimbra Friends, Customers & Partners, A new Zero-day exploit has been identified that affects Zimbra 8.8.15. Since learning of the reported vulnerability, Zimbra Engineering has verified the issue and produced a hotfix (for 8.8.15 p30). The hotfix will be available to Zimbra customers through Zimbra Support. A durable fix for the issue is undergoing […]
Zimbra SkillZ: Add an External Email Warning in Zimbra
Hello Zimbra Customers, Partners & Friends, In today’s blog, I’ll show you how to add an external email warning message in Zimbra when receiving an email from an external domain. This is done using a Sieve filter, and it can be enabled per account, COS, domain and server. First, create /tmp/myfilters su – zimbra nano […]
Security – Check out Email Threat Checklist + Introducing… Janusmail
By Gayle Billat on April 13, 2021 in Community, Partners, Security & Privacy, Zimbra Web Client, Zimlets
Hello Zimbra Customers, Partners and Friends, We all know about spam, viruses, malware and other threats to email security. We teach our Zimbra users how to best protect themselves from these threats. Our Zimbra admins optimize anti-spam and anti-virus tools. The Zimbra Product Team builds in as much AS/AV protection as possible. But the threats […]
Zimbra Now with TLS 1.3 Support!
By Barry de Graaff on April 7, 2021 in Product News, Community, Education, Partners, Security & Privacy
Hello Zimbra Partners, Customers & Friends, In the latest Zimbra patch, Zimbra 9.0.0 “Kepler” Patch 13 and 8.8.15 “James Prescott Joule” Patch 20, the following packages are now GA: OpenSSL 1.1.1h support for TLS 1.3. OpenSSL 1.1.1h with FIPS module support. Postfix 3.5.6 support for TLSv1.3 Nginx 1.19.0 support for TLSv1.3 Why is this important […]
Zimbra Admin Reminder … Block “memcrashd” Port 11211
By Gayle Billat on July 9, 2020 in Product News, Community, Education, Open Source, PowerTips – Admins, Product Updates, Security & Privacy, Zimbra Server
Hello Zimbra Friends & Admins, This is a friendly reminder that Zimbra memcached may face the “memcrashd” attack on port 11211. By default, memcached listens on a server IP address that is accessible on the network and via the internet if there is no firewall. If your Zimbra memcache servers are behind a firewall, we […]