I'm trying to install Roundcube on CentOS/Qmail. I'm getting this message at the end of my installation during testing:
Connecting to xxxxxxxxxx...
Warning: ini_set() [function.ini-set]: A session is active. You cannot change the session module's ini settings at this time in /var/www/vhosts/xxxxxxx/httpdocs/webmail/program/include/rcmail.php on line 499
IMAP connect: NOT OK(Authentication for xxxxxxxx failed (LOGIN): "a001 NO Login failed.")
Fixed Changeset 3555 ? Roundcube Webmail (http://trac.roundcube.net/changeset/3555)