Log delay bins MTA option

Counters MTA options:  (comma-separated list of up to five integers)
The  MTA option  specifies the bin divisions for the MTA counters  tracking numbers of messages delivered in the specified number of seconds. The default values are 60, 600, 6000, 60000, 600000.

See also:
 * MTA counters
 * Counters MTA options