The rewrite rules appear in the upper half of the PMDF configuration
file. On OpenVMS systems, this is the file pointed at by the logical
PMDF_CONFIG_FILE;4 on UNIX systems this is the file
specified by the PMDF_CONFIG_FILE5 setting in the PMDF
/etc/pmdf_tailor; on NT systems this is the
file specified by the PMDF_CONFIG_FILE6 PMDF Tailor entry in
the Registry. Each rule in the configuration file appears on a single
line. Comments but not blank lines are allowed between rules. The end
of the rewrite rules is denoted by a blank line after which follow the
Every rule consists of two parts: a pattern followed by an equivalence string or template. The two parts must be separated by one or more spaces (spaces are not allowed in the parts themselves). The template specifies a username, a host/domain specification, and the name of a system attached to an existing PMDF channel (the "routing system") to which messages to this address should be sent.
As discussed in Section 2.2.9, additional rewrite rules may be located in an auxiliary database called the domain database. See Section 2.2.9 for information on that database.
The syntax of domain rewriting rules is discussed in further detail below in Section 2.2.4, Patterns and Tags and Section 2.2.5, Templates. First, however, Section 2.2.3 presents a discussion of the application of rewrite rules to addresses, giving an overview of the action of rewrite rules in operation.