I am very curious, so sorry if I am asking this in the wrong way, but I can't find this info anywhere.
I have a newsletter service installed in my Joomla 3.1 that allows me to send emails via PHP mailer. In the last few days, I figured out that at least 30% of my sent emails were blocked (and so my domain IP).
So I asked myself the meaning of changing mailer method to SMTP (the configuration in my Joomla allows me to do this), but here's a question: how could I install an SMTP server in my host (with cPanel) resulting in more delivered e-mails?