Channel class

The  group  (under  ) is not a Job Controller option itself, but rather a grouping of  Job Controller options defining a particular named Job Controller channel, or class of channels having a certain name pattern. For instance: msconfig&#x3e; show channel_class:ims-ms&#x2a; role.job_controller.channel_class:ims-ms&#x2a;.master_command = IMTA_BIN:ims_master role.job_controller.channel_class:ims-ms&#x2a;.max_life_askwork = 20000 role.job_controller.channel_class:ims-ms&#x2a;.max_life_time = 14400 This defines the class of channels whose names begin. Such channels have a master program (named  ),  and have   and   options set to force delivery jobs for such channels to "time out" after certain work and time limits, so that a new, fresh delivery job will be created (as necessary) by the Job Controller.

See Job Controller operation for further discussion of how the Job Controller tracks messages and initiates channel jobs that run channel programs, see Job Controller default configuration for several examples of channel definitions, see Available channels for a list of the normal channels supplied with the MTA, and  see the   utility for how to inform an already running  Job Controller process of a new   "on the fly".

The other type of grouping of Job Controller options is under the  group, used to set parameters on Job Controller processing pools.

See also:
 * Job Controller options
 * Job Controller default configuration
 * Job Controller operation
 * Available channels
 * ims-ms channels
 * master_command Option
 * cache -change utility
 * job_pool