I have a machine with sshd running AllowUsers config, to allow just a few users to connect. After install Zimbra7, I had problems with Admin Console interface, with "system failure... 22" messages. I found the answer to my problem in forum, because I had to have sshd running in port 22. Then, I commented the AllowUsers config and the Admin Console worked fine. But does what user Zimbra7 use to connect to sshd? I would like to configure this and put AllowUsers active again. And I wouldn't like to put root in this config.