Mail not being sent out

Hi i am using phplist version 3.0.5
PHP Version 5.5.9

I am getting the following error on PHPlist

I have set up a cron job

/usr/bin/php /var/www/vhosts/samyak792wpt/ -pprocessqueue -c/var/www/vhosts/samyak792wpt/ > /dev/null

To process the queue every hour.

But it does not send out mails.

Test mails are going out fine. Even when i process the queue manually it is not sending out mails.

I am using webmin and ehcp along with phplist.

Can anyone help me out with this?


> /dev/null

Don’t discard the output, save it to a file. Otherwise you will have no idea why it is failing.