Unable to send mail: 5.6.3.1

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Form are not sending email. I went to /dashboard/system/mail/method/test_settings/test/
and got the following results.
With Default PHP Mail Function chosen I get the error "Unable to send mail." and when I choose External SMTP Server and set it with my gmail info I get the error "Permission denied"

When I view logs from the dashboard there is nothing from the tests but I do have Exception errors from the last Form submission.

Here is an example:

Mail Exception Occurred. Unable to send mail: Unable to send mail.
#0 /var/www/html/concrete/libraries/3rdparty/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Sendmail->_sendMail()
#1 /var/www/html/concrete/libraries/3rdparty/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#2 /var/www/html/concrete/core/helpers/mail.php(368): Zend_Mail->send(NULL)
#3 /var/www/html/concrete/core/controllers/blocks/form.php(461): Concrete5_Helper_Mail->sendMail()
#4 /var/www/html/concrete/core/models/block.php(411): Concrete5_Controller_Block_Form->action_submit_form()
#5 /var/www/html/concrete/startup/process.php(344): Concrete5_Model_Block->passThruBlock('submit_form')
#6 /var/www/html/concrete/dispatcher.php(253): require('/var/www/html/c...')
#7 /var/www/html/index.php(2): require('/var/www/html/c...')
#8 {main}
Template Used: block_form_submission
To: [email protected]
From: [email protected]
Reply-To: [email protected]
Subject: Test Contact Form Form Submission
Body:
There has been a submission of the form Test Contact Form through your concrete5 website.

Name
pj

Email
[email protected]

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Please help, this is holding up the launch of the website!
concrete5 Version: 5.6.3.1
PHP Version: 5.3.3

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