Log frustration limit MTA option

Counters MTA options:  (integer)
When attempting a counter update operation (whether an attempt to update channel counters or association counters), the MTA will try ten times before giving up on that particular update operation. Each MTA process keeps track of how many such update "frustrations" have occurred, that is, how many times the process has had to give up on updating the counters, and if that value exceeds the  value, which by default is 100, then that process will no longer even attempt counter update operations.

See also:
 * MTA counters
 * Counters MTA options