Include mtpriority MTA option

Mapping table MTA options: (bitmask)
(New in 8.0.) The current MT-PRIORITY value (an integer in the range -9 to 9) and the current message size estimate may be includeed in various mapping probes. This is all controlled by the  MTA option. When these values are included in a probe they appear as separate fields. This option is bit-encoded, with the bits defined as follows:

Bit 0 is the least significant bit.

The default is 0, meaning that no MT-PRIORITY or message size estimates are includes in the various mapping table probes. With the exception of the  mapping,  the MT-PRIORITY and message size estimate are added in that order, delimited by vertical bars.

The message size estimate is the size of the queued message entry for internal channels; it&#x27;s the value given by the SMTP SIZE extension for incoming SMTP channels. The size is given in MTA blocks and will be 0 if no size information is available. Note that message sizes can change as a result of channel processing, encoding, decoding, and conversion operations.

See also:
 * Mapping tables
 * block_size MTA Option
 * include_spares1 MTA Option
 * include_conversiontag MTA Option
 * Recipient access mapping tables
 * FROM_ACCESS mapping table
 * FORWARD mapping table
 * CONVERSIONS mapping table
 * ldap_domain_attr_catchall_mapping MTA Option
 * Access mapping table MTA options