Increase rouncube attachment limit

1)Set global limits in file /etc/php5/apache2/php.ini:

upload_max_filesize = 32M
post_max_size = 32M

2)Set local limits in /usr/share/roundcube/.htaccess

php_value upload_max_filesize 16M
php_value post_max_size 17M
php_value memory_limit 256M

P.S. Perhaps you will need to adjust your Postfix SMTP server message size limit in /etc/postfix/main.cf

message_size_limit = 33554432

Sync clocks between Windows and Linux multiboot

Windows by default uses local time, Linux by default – UTC

Windows can be changed to UTC by adding new DWORD(32-bit) RealTimeIsUniversal=1 registry key in
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation

Linux can be changed to local time by changing line “UTC” to “LOCAL” in file /etc/adjtime. After changing it is necessary to fix hardware clock to right value by copying system time into hardware clock using command:
/sbin/hwclock -w