Back in 2018 CloudFlare reported massive amplification attacks from UDP port 11211 on a scale never seen before. Zimbra quickly updated their wiki with How to Block Memcache Attack and if you haven’t taken the advice yet, you probably should...
Recently I was tasked to install a free SSL certificate from LetsEncrypt on a local Linux machine that was running Zimbra Mail Server. The task seemed simple, and I had no problem generating and installing the certificate from LetsEncrypt on Linux...