Today I've solved one Squirrelmail + ISPConfig that maybe is useful for other users: When I add one attach, I get this error: "Could not move/copy file. File not attached". All is correct (permisions, quotas): http://www.squirrelmail.org/wiki/DirectoryPermissionsProblem Seems that this error is due that ISPConfig changes upload parameters in /etc/apache2/vhosts/Vhosts_ispconfig.conf: Code: php_admin_value file_uploads 1 php_admin_value upload_tmp_dir /home/www/web1/phptmp/ php_admin_value session.save_path /home/www/web1/phptmp/ I've changed Squirrelmail configuration and now works fine with attachments: Code: $attachment_dir = '/home/www/web1/phptmp/'; (in /home/www/web1/web/config/config.php)