Log notary MTA option

Transaction logging MTA options:  (0-3)
The  MTA option controls whether the MTA includes an indicator of NOTARY (delivery receipt) flags in the   file entries or in    mapping probes. Bit 0/value 1, if set, enables NOTARY flag 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. The NOTARY flags will be logged as a bit encoded integer after the current form of the envelope To: address. In XML-compatible format ( set to 4), notification flag logging, if enabled, appears in the   attribute.

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

See also:
 * Transaction logging MTA options
 * MTA transaction logging
 * log_format MTA Option
 * Triggering effects from transaction logging with LOG_ACTION
 * reportheader Option
 * reportboth Option