Email being bounced back due to Spam Score

I am getting email that is being bounced back due to a high spam score. I do not have any of the boxes checked in WHM that bounce email for having a highscore..

SpamAssassinTM: Reject mail with a spam score greater than 20 at SMTP time..... none of those are checked..

Is there somewhere else I should look?

Here is a copy of the email:

Subject: Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

viki@domain.com
The mail server detected your message as spam and has prevented delivery (200).