sendmail, 4th Edition

$#

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Specify a delivery agent

RHS delivery-agent operator

The $# RHS operator serves two functions. The first is to select a delivery agent, the second is to return the status of a policy-checking rule set. We cover the first in this section and the second in the next .

When used as a prefix to the RHS or a rule set (except when used in a policy-checking rule set), the $# operator is used to select a delivery agent. Consider, for example, the following rule:

 R$+         $#local $: 

Here, the LHS looks for a workspace that contains a username (without a host part). If such a workspace is found, the RHS is then used to select a delivery agent for that user . The selection of a delivery agent is signaled by the $# prefix to the RHS. The symbolic name of the delivery agent is set to local . The $ : operator in the RHS is described in $:.

The $# in the RHS must be used as a prefix or it loses its special meaning. See Section 18.7.5 for a full description of this operator.