Modification to CEM's email settings from SMTP to CSSMTP and specifying 'RICH' text for the content-type has the alert information coming as an email attachment instead of within the body of the email message.
This condition seems to be by design running CSSMTP on the mainframe and using 'RICH' text.
Release : 6.0
Component : CA COMPLIANCE EVENT MANAGER
This is a design idiosyncrasy of CSSMTP from the mainframe sending the information as an attachment when a content-type of 'RICH' text is specified. To have the information sent in the body of the email it is recommended to use 'HTML' or 'PLAIN'. On a side note, 'HTML' supports everything 'RICH' text supports along with other formatting, and like 'PLAIN' text the information will be sent in the body of the email.