Access counts MTA option

Access mapping table MTA options: (bitmask)
(New in MS 6.3.) The  MTA  option provides a way to get at various types of recipient count information in the various  recipient-based &#x2a;_ACCESS mappings. is bit-encoded in the same way as  is, and if set, enables the addition of a set of counts after the (optional)   field and before the (optional)   field in the access mapping probe string. Currently the format of the count addition is: RCPT-TO-count/total-recipient-count/expansion-count/ Note the trailing slash. It is expected that additional counter information will be added to this field in the future; all mappings making use of this information should be coded to ignore anything following the (current) last slash or they may break without warning. The   is the count of valid recipients resulting from previous RCPT TO commands (not including the RCPT TO command corresponding to this probe).

New in 8.0.1.2 is  , a count of the number of actual recipient addresses produced by the current RCPT TO command, including the current one.

Bit 0 is the least significant bit.

See also:
 * Access mapping table MTA options
 * Recipient access mapping tables