Most web servers are configured to send e-mail over SMTP via port 25. If you need to send e-mail over a secure connection (SSL/TLS), the port number should be 465. Our shared servers use these default port numbers.

For information about how you can switch over to SMTP authentication for sending e-mails via your web application (e.g. phpBB, WordPress, etc.), please read the following articles:

WordPress – Switch to Sending Email via SMTP (PHP Mail Alternative)

Using SMTP for Sending E-mail in phpBB (PHP Mail Alternative)