Change the value for the maximum attachment size in Roundcube

The default value of an attachment loadable on the Roundcube webmail is 5 MB, a system administrator might be led to think that that value depends on the parameters of the PHP configuration, but so it is only partially, in fact the Roundcube platform in addition to read certain values from configuration file php.ini, has its own htaccess file that serves as an override for certain operations.

Therefore to change the maximum size of the attachment you need to edit the file / etc / roundcube / htaccess, search and modify the following lines as you wish, without exaggerating the value to be inserted:

php_value upload_max_filesize 15M
php_value post_max_size 15M

(Tested on Debian distributions 6, 7, 8, 9).