Log priority MTA option

Transaction logging MTA options:  (0-3)
The  MTA option controls whether or not the effective processing priority for the message is included in the    file entries or    mapping  probes. Bit 0/value 1, if set, enables priority logging. As of MS 6.3P1, enabling XML format (  set to 4) causes the default for   to be 1; with  any other format, the default is 0, as in previous versions. If logging is enabled, the priority will be logged after the message sensitivity value, before the transport information. In XML-compatible format ( set to 4), priority logging, if enabled, appears as the   attribute.

New in 7.0-3.01, bit 1 (value 2), if set, causes priority information to be included in   mapping  probes.

As of 8.0, the MTA also supports the SMTP MT-PRIORITY extension, which provides a different, non-header-based, priority facility. The logging of MT-PRIORITY is controlled separately, via the  MTA option.

See also:
 * Transaction logging MTA options
 * MTA transaction logging
 * log_format MTA Option
 * log_mtpriority MTA Option
 * log_sensitivity MTA Option
 * log_connection MTA Option