Tips for improving your Zimbra experience.
Email is one of the top attack vectors for getting inside an organization, and it is a known fact that we are more likely to open an email that purports to come from someone we know. The spammers of course know this too, and recently, they have been exploiting it …
Zimbra’s DoSFilter (Denial of Service Filter) is a mechanism to throttle or block IP addresses that have a repeated number of failed logins to your Zimbra system. Zimbra’s Classes of Service include a Failed Login Lockout policy that will put a mailbox in Locked Out mode, hopefully before a brute …
Around the time of Zimbra 4.0.5 in 2006, Zimbra had a short installation “Cheat Sheet” that simplified performing a Zimbra installation. All the data (now updated) in that old Cheat Sheet is available in the current Zimbra Documentation and detailed Installation guides, but for someone who just needs to prototype …
Zimbra used to ship with an audit watching process (zmauditswatch) that could be configured to send an alert email to administrators when certain bad activity was noted in the logs, like repeated failed logins from a certain IP address, or for a particular mailbox. The underlying software underwent some changes …
:: Zimbra and DNS Challenges :: Zimbra, like all email servers, is highly reliant on performant DNS not only to be able to send and receive email, but also to be able to perform anti-spam tasks. Certain components of Zimbra even use DNS to find other Zimbra components and servers …
