Fresh install Kolab 16 CentOS 7 imap issue

[Gerald Brandt]

Hi,

I did a fresh install on CentOS 7 of Kolab 16. Everything seemed to go 
fine. However, roundcube comes up with "Connection to storage server 
failed". when I 'telnet localhost imap" I get a connection to the imap 
server, and it immediately disconnects.

Any ideas?

Gerald