Log_remote_mta MTA option

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Transaction logging MTA options: log_remote_mta (0-3)

(New in MS 8.0.2.3.) The log_remote_mta MTA option controls whether the remote MTA name is included in MTA message transaction log entries as a separate field and LOG_ACTION mapping probes that correspond to an operation involving a remote SMTP or LMTP server.

Setting bit 0/value 1 enables the generation of the remote MTA and also disables the inclusion of this information in the diagnostics field; clearing the bit disables the use of a separate field. The default is 0.

If logging is enabled, the remote MTA name will be logged just after the SMTP delivery status (log_diagnostics SMTP diagnostic) field and just before the ISC status field. In XML or JSON format (log_format set to 4 or 5, respectively), the reason logging, if enabled, appears as the rm attribute.

Normally the rm attribute only appears in XML or JSON format logs if there is remote MTA information to log. Setting bit 2 (value 4) will cause the attribute to appear unconditionally.

Bit 1 (value 2), if set, causes remote MTA information to be included in LOG_ACTION mapping probes.


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