[otrs] Changing sending mail server

I would like to change the sending mail server our OTRS system uses, but here's my question: According to the user guide, I can change how mail is sent in Kernel/Config.pm But when I look in that file, it doesn't contain ANY information about how mail is sent in my current config. Neither Sendmail or SMTP. I am clearly sending mail, so where else should I look? -- Wes Plate Automatic Duck, Inc. http://www.wesplate.com http://www.automaticduck.com