kumo.apply_supplemental_trace_header
Since: Dev Builds Only
The functionality described in this section requires a dev build of KumoMTA. You can obtain a dev build by following the instructions in the Installation section.
Builds a supplemental trace header according to the optional parameters, and adds it to the message.
If opt_params
is omitted or is nil
, then the default params will be used.
The parameters are the same as the
start_esmtp_listener.trace_headers
parameter value.
Example: add a default supplemental trace header
Both of these examples are equivalent: