Guys there have commented :
Open /etc/rsyslog.conf and comment or remove the following lines.
#
# Set the default permissions for all log files.
#
#$FileOwner syslog
#$FileGroup adm
#$FileCreateMode 0640
#$DirCreateMode 0755
#$Umask 0022
#$PrivDropToUser syslog
#$PrivDropToGroup syslog
this will need a restart of rsyslog service*