Mail Server & Port
The Mail Server is the IP Address or DNS for your Mail Server. The default port for the mail server is 25, but your system may utilize a different port. The Mail Server from your successful test needs to be entered in your System Prefs > "Mail Server" options menu.
If your mail server is using a port other than 25, then the Mail Server address needs to be entered in System Prefs with a :<portnumber> appended to the address. For example:
From Email Address
The From Email Address field is the email address from which the test email is sent.
To Email Address
The To Email Address field is the email address to which the test email is sent.
Email Subject Line
The Email Subject Line field is the subject of the test email.
The Email Message field is the body of the test email.
Display Verbose Logging in Results
The Display Verbose Logging checkbox enables a detailed log of the mail process. This allows for troubleshooting if sending the email fails.