Using the Mail and Messaging system

Automatic disposition (filtering) of incoming mail

The mail transport provides two mechanisms for allowing users to configure automated disposition of incoming mail.

.forward is a simple way to forward all incoming mail to one or more destinations.
.maildelivery is a much more powerful mechanism that allows mail to be sent to specific destinations (recipients and folders) based on matching criteria. Originating user and subject contents can be matched against, and multiple conditions can be used which is an slocal(1) enhancement over the .maildelivery functionality that is present in SCO OpenServer 5.

.forward is a built-in sendmail feature, whereas .maildelivery processing is provided by slocal which the mail system uses as its local delivery agent.

For a full description of the above features, see the forward(4) and maildelivery(4) manual pages.