Sun™ ONE Messaging Server: Practices and Techniques for Enterprise Customers

MTA Tuning

This section covers the following topics:

• Dispatcher

• Job_Controller

• Option.dat

• IMTA_TAILOR File

Dispatcher

You want to allow enough connections to support your load, while not allowing so many concurrent connections that your system is not able to respond quickly and prevent a DOS attack. The maximum concurrency number is equal to MAX_PROCS * MAX_CONNS, defaults are 10 and 20, respectively. Once you know the maximum concurrency rate for your configuration, you can determine the number of processes required to support your total load.

Job_Controller

You must be concerned with two files, imta.cnf and job_controll.cnf. The job_controll.cnf file defines the pools and the maximum number of jobs that can be run at a given time in those pools. ...