message_id_list
Since: Version 2025.10.06-5ec871ab
The functionality described in this section requires version 2025.10.06-5ec871ab of KumoMTA, or a more recent version.
Reading the message_id_list field will attempt to interpret the contents of the
header as list of Message-Id header values.
If the header value is not compatible with this representation, a lua error will be raised.