Why aren't my email messages being sent from my VPS using PhpList?

Question

I have a VPS from Digital Ocean. I installed Phplist on my server. Digital Ocean has only provided me an IP adress. And i am trying to send emails directly from phpList by Browsing through that IP address? Is this the reason, that i am not being able to send email from it?

or Should i get a domain name like (example.com) to be able to send email? or there are more configurations to be done besides installing phpLst. I have installed Apache , mysql and php on that server and its running ubuntu 12.04 (32bit)..

Answer 1

You need to install a SMTP server in your VPS to send mails.
I prefer using postfix in your ubuntu server.
Try the following link. It might help you.

Install and Setup Postfix on Ubuntu

After this open up your config.php file and search for the following line of code:
define("PHPMAILERHOST",'');
Replace PHPMAILERHOST with your server host name(example.com)