pub fn resolve_filed_sender(
envelope: &Envelope,
via_principal: Option<&str>,
) -> Option<Value>Expand description
The sender of mail another machine filed here, resolved on this machine: the filer’s own sender_identity is
never read. A resolution naming anyone but the principal Teams authenticated as the filer (via_principal) is not
this sender’s, so a forged return address resolves to nobody.