Script to kill Roundcube stuck process !!

Create the new file roundcube.sh and insert the following code.
#!/bin/sh
for ROUNDCUBE in `ps aux | grep roundcube | awk -F ” ” ‘{print $10}’ | awk -F “:” ‘{print $1}’`;
do
if [ $ROUNDCUBE -ge 20 ]; then
pkill -u cpanelroundcube
echo “kill roundcube process roundcube”;
fi
done
You can add the cron job to run the above script after a specific time period, if you are facing the roundcube cpu usage issue continuously.Add following line under the crontab by using the crontab -e, it will run the cron after every 10 minutes.
*/10 * * * * sh /root/roundcube.sh;

SMTP error 535 authentication failed in roundcube OR SMTP Error (435): Authentication failed

If you face SMTP error 535 Authentication Failed while sending an email from round cube, then you can check the following things.

vi /usr/local/cpanel/base/3rdparty/roundcube/config/main.inc.php

and change

$rcmail_config['smtp_user'] = '%u';
to
$rcmail_config['smtp_user'] = '';

Save the file

FIXED....