I don't know why but my previous post just got deleted...
I installed a fresh CentOS 7 server with Alfresco Community using this guide:
Everything seems to be working fine except the "Edit in Microsoft Office".
When I click that link, it opens Excel but the sheet is not being opened, just a blank page while Excel is still responsive.
Using Office 2013, tested on different PC's but all same results.
I did notice that http://mydomain.com:7070 is not reachable while I added the port forward in the router and also opened the port on the server firewall.
During the installation it did not ask for the Sharepoint port like the above instruction suggest:
Alfresco SharePoint Port Please choose a port number for the SharePoint protocol. Port: :
Any help would be appreciated.