Log isc status MTA option

Logging Indexed Search Converter status: (bitmask)
New in MS 8.0.2. The  MTA option causes a field recording information sent to or reported by the Indexed Search Converter (ISC) to be included in log file entries (both "S" and "J" entries on LMTP server systems, "E" entries on front end systems) and/or   mapping table probes.

Bit 0 (value 1) enables including the field in MTA message transaction log file entries; bit 1 (value 2) enables including the field in   mapping table probes. If enabled, this field appears after the "diagnostics" field ( option) and before the transport information filed (  option). The XML format tag for this field is "is". The default is 1 in XML and JSON format logs and 0 in other formats.

Normally the  attribute only appears in XML or JSON format logs if there is ISC status information to log. As of MS 8.0.2.3, setting bit 2 (value 4) will cause the attribute to appear unconditionally.

The content of the "is" field differs depending on the type of system performing the logging. On LMTP server systems the field will begin with an indication of whether or not immediate conversion was requested - "IMMEDIATE" if it was, "DEFERRED" if it wasn&#x27;t. This will be optionally followed by any status information returned by the converter.

On all other types of systems the "is" will contain when the indexing operaton is supposed to be performed if a preference was selected by the system doing the logging. A value of "DEFERRED" is recorded if deferred indexing was requested. A value of "IMMEDIATE-r-t, where r is the retry limit and t is the timeout, is recorded when immediate indexing is requested.

See also:
 * Transaction logging MTA options
 * MTA transaction logging
 * MTA transaction log entry format
 * log_format MTA Option