rfc2822_messageid_header — rfc2822 conformance
RFC2822_MessageID_Header = "ignore"
RFC2822_MessageID_Header = "ifneeded"
If a message is missing the
Message-ID: header and
MessageID_Header is set to
ifneeded, Momentum will generate a suitable header and insert it into the message.
This option is available as of version 3.0 and replaces the version 2.2 option of the same name declared in the RFC2822 scope.
From the web UI, when this option has not been set, its value is shown as
1. This is the integer constant value of the default,
ifneeded. Once this option has been set, the string value displays rather than the integer constant. If you set this value from the web UI, choose one of the string values rather than the
RFC2822_MessageID_Header is valid in the global and the pathway scopes.