Thanks Rosali,
I put the last version of roundcube, later I put $rcmail_config['default_host'] = 'localhost'; but I loose contacts and signatures, I read in the forum that I must put $rcmail_config['default_host'] = 'mail.mydomain.com'; but I have the same problem, If I put $rcmail_config['default_host'] = ''; I win de signatures and contacts of the users but in the start login page the user must put host name server.
Can you helpme please?
Thanks,
Regards