It is the store portion of an SMTP store and forward proxy. The symbiotic companion program smtpfwdd is used to forward the spooled mail on to its eventual destination.
Documentation is avaialble online with the juniper documentation.
See the docs for smtpd as a starting point. Version 2.0 now supports access control rules based on the connecting host, and the smtp envelope. The rules file format is documented here . All rights reserved Validate this page .