I've been trying to send test messages with the Internal PHP but they don't go through. Is there anyway to check what the issue is? Also, I don't understand how to setup the SMTP to try that. I created an email with my webhost and input that, along with the information given by them about setting up the SMTP, but whenever I attempt a test message is receive the error: Error during e-mail sending: Zend_Mail_Protocol_Exception:Could not open socket What does this mean?
Unfortunately php doesn't provide any information about errors when you are using internal mail function. When you are using SMTP error means that port which you have specified in mail server configuration is wrong or is blocked by firewall. Verify your SMTP server settings may be you need to enable encryption and use different port then default 25