add instruction for outlook 2016

docs/client-outlook.md

@@ -1,6 +1,21 @@
 <div class="client_outlookEAS_enabled" markdown="1">
 
-## Outlook 2013 or higher on Windows
+## Outlook 2016 on Windows
+
+<div class="client_variables_unavailable" markdown="1">
+  This is only applicable if your server administrator has not disabled EAS for Outlook. If it is disabled, please follow the guide for Outlook 2007 instead.
+</div>
+
+Outlook 2016 has an [issue with autodiscover](https://github.com/mailcow/mailcow-dockerized/issues/615). For EAS you must use the old Assistent:
+
+1. Launch `C:\Program Files (x86)\Microsoft Office\root\Office16\OLCFG.EXE`
+2. If this is the first time you launched Outlook, it asks you to add a new profile. After that the account setup can be started.
+4. Enter your name<span class="client_variables_available"> (<code><span class="client_var_name"></span></code>)</span>, email address<span class="client_variables_available"> (<code><span class="client_var_email"></span></code>)</span> and your password. Click *Next*.
+5. When prompted, enter your password again, check *Remember my credentials* and click *OK*.
+6. Click the *Allow* button.
+7. Click *Finish*.
+
+## Outlook 2013 on Windows
 
 <div class="client_variables_unavailable" markdown="1">
   This is only applicable if your server administrator has not disabled EAS for Outlook. If it is disabled, please follow the guide for Outlook 2007 instead.