If I log in to the admin control panel, then click on the arrow besides servers at the left hand side I see my single zimbra server.
message: this._toolbar has no properties fileName: https://zimbra.domain.lan:7071/servi..._zimbra_hsm.js
lineNumber: 355 stack: ([object Object])@https://zimbra.domain.lan:7071/service/zimlet/com_zimbra_hsm/com_zimbra_hsm.js:355 call([object Object],[object Object])@:0 ([object Ob...
In Internet Explorer I also get a JS error, though it is different:
name: TypeError message: 'this._toolbar' is null or not an object number: - 2146823281 description: 'this._toolbar' is null or not an object