[otrs] Emails from Agent appear as from Customer in 2.1.2

For some of our tickets we generate information in another database that is emailed to the customer, and our OTRS system is CCed. In the past (1.3) these emails appeared in OTRS as agent messages, but now in 2.1.2 these appear as customer emails and generate follow-up notices. Can I change this behavior? -- Wes Plate Automatic Duck, Inc. http://www.automaticduck.com