I first want to say that I am fairly new to Administering Zimbra, and am still learning. We are having an issue where the Zimbra Server becomes unavailable every Saturday afternoon around 2:15 pm and is back up around 3:00 pm. Since this occurs at the same instance weekly, it seems like it could be a scheduled task running, but I am not familiar enough with Zimbra to find out what may be causing this. Can someone offer any suggestions? Please advise.