If you did not select either sendmail or Postfix as the mail transfer agent (MTA) during PureMessage installation, use the instructions below to set up PureMessage to work with an existing MTA. This section describes configuring PureMessage for external versions of sendmail, Sendmail Switch and Postfix.
If you want to use the Java System Messaging Server (JSMS) as your MTA, it must be installed prior to installing PureMessage. For configuration options, see the pmxchannel.conf man page.