We are trying to set up basic Group-Office (no mail server) on a Debian 7 system (as a virtual machine) via the repositories. Installation went fine but ee cannot get email to work, so far. Group-Office is running on the local network.
Group-Office reports that it cannot connect to the external server (please check the Internet connection). I can ping the mail server from the virtual machine so I am missing something. The error log includes the following (user and token value removed):
[20160613 18:08:49] PHP Fatal error: Class 'GO\Base\Util\String' not found in /usr/share/groupoffice/go/base/util/Crypt.php on line 193
GO::shutdown in file unknown on line unknown
Anyone have a suggestion on how to address the problem? Thank you!