Programs and interfaces to mailers are defined on this line. The format is:
| Mc name, c
{c field=value}* | 
where name is the name of the mailer (used in error messages) and the field=value pairs define attributes of the mailer. Table 3-7 shows the fields.
Table 3-7 Mailer Definition Fields| Field | Description | 
|---|---|
| A | An argument vector to pass to this mailer | 
| D | The working directory for the mailer | 
| E | The end-of-line string for this mailer | 
| F | Special flags for this mailer | 
| L | The maximum line length in the message body | 
| M | The maximum message length to this mailer | 
| P | The path name of the mailer | 
| R | A rewriting rule set for recipient names | 
| S |