I am using fedora in my DEV machine and tring to send mail via codeignigter.
the sendmail is working fine, the PHP mail() function is working fine as well.
but for some reason, codeigniter isnt working with the following settings that it also configured in the php.ini:

$config['protocol'] = 'sendmail';
$config['mailpath'] = '/usr/sbin/sendmail';

i alıyorum hatadır:

Exit status code: 64
Unable to open a socket to Sendmail. Please check settings.
Unable to send email using PHP Sendmail. Your server might not be configured to send mail using this method.

Teşekkürler