You can find out SMTP settings for an email address you have created on x10 by following these instructions:
1. Login to your cPanel.
2. Click on the 'Email Accounts' button.
3. In the table next to your chosen email address, click the 'More' button.
4. From the dropdown choose 'Configure Email Client'
5. Scroll down to Manual Settings, where you will see your email settings for Incoming (POP3/IMAP) and Outgoing (SMTP)