Software Version 5.2.0

Powerful spam filter with over 99% detection rate and an exceptionally low false positive rate of less than 0.00001%.
Permanent real-time monitoring and quality assurance of the network-based antispam services by Intra2net
Automatic activation of the new spam filter after calibration under "Services > Email Filter > Spam > Credible Servers".
Deleted users are automatically removed from email distribution lists
Deactivated users are excluded from email distribution lists if no email forwarding is stored
Changes to the system and restoring of emails now runs simultaneously
Bandwidth management for DSL dial-up lines (PPPoE) improved
"cyrus" user is hidden in disk statistics again
Improved security on Linux base system (bind 9.6.1: CVE-2009-0696, curl-ssl-7.19.6: CVE-2009-2417, fetchmail-6.3.11: CVE-2009-2666, kernel-2.6.30.5, libtiff-3.8.2: CVE-2009-2285 as well as CVE-2009-2347, perl-IO-Socket-SSL-1.30, samba-3.0.36: CVE-2009-1888, squid-3.0STABLE19)
Linux basic services update (libpng-1.2.39, iptables-1.4.4, iXhash-1.5.5)