Tuning mailman servers

Once the distribution of agents to mailman servers has been established, all the groups of agents attached to the same server must respect the link condition.

The link condition relates the number of agents connected to a mailman process and the tuning parameters for unlink on the mailman and writer side.
No_agents(i)
The number of agents connected to a given mailman server i
Mm_unlink
A parameter set in the localopts of both domain manager and agent. Specifies the maximum number of seconds mailman waits before unlinking from a workstation that is not responding.
Wr_unlink
A parameter set in the localopts of both domain manager and agent. Specifies the number of seconds the writer process waits before exiting if no incoming messages are received.
Max_down_agents
The maximum probable number of agents that are unavailable without having the ignore flag set in the database and having the autolink flag on.
tcp timeout
A parameter set in the localopts of both domain manager and agent. Specify the maximum number of seconds that can be waited for the completion of a TCP/IP request on a connected workstation that is not responding.
The condition is: 
Wr_unlink = Mm_unlink > 1.2 * Max_down_agents * tcp timeout

This condition expresses that if the time before unlink is smaller than the probable time of idle waiting of the mailman process (waiting connect timeout for each agent that is currently down) in its loop to reactivate the connections, the agents unlink constantly when some agents are down.