Use PureMessage with one of the following mail transfer agents:
See 'When should I use an existing sendmail, Postfix or Java System Messaging Server (JSMS) installation?' in the PureMessage FAQ for more information.
Java System Messaging Server (JSMS): Although a version of JSMS is not bundled with the product, PureMessage includes a JSMS connector, which allows PureMessage to work with JSMS versions 5.2 and 6.0. The connector must be installed on a Solaris system. JSMS version 5.2 and version 6 must be run on a supported version of SPARC (see the Sophos "Software lifecycle" web page). JSMS must be installed prior to installing PureMessage. For configuration options, see the pmxchannel.conf man page.
PureMessage also supports Java Systems Messaging Server (JSMS) versions 7.0 and 6.3 (if patched to include milter support). In order to use either of these JSMS versions with PureMessage, you must configure JSMS to communicate directly with the PureMessage milter. For instructions, see "Configuring PureMessage for Java Systems Messaging Server (JSMS)" in the Knowledgebase on the Sophos website.
See "When should I use an existing sendmail, Postfix or Java System Messaging Server (JSMS) installation?" in the PureMessage FAQ for more information.