Why are some emails rejected due to high spam scores?

Emails with high spam scores (e.g., 4.8) are rejected. Address as follows:

• Redesign Message: Use lowercase subjects and rewrite body content to lower the spam score.
• Use Tools: Check scores with http://www.copernica.com/en/blog/some-tips-to-lower-your-email-spam-score.
• Adjust Protection: Lower Anti-SPAM settings in Email > Spam (https://us.cloudlogin.co/mail/spam/) or disable temporarily for testing.