On 30 Jan 2019, at 6:27, David Jones wrote:
4. Only redact your recipient's address and name. Replace the
recipient's domain with something like example.com or redacted.com so
it
looks like a real domain format. Otherwise, it may hit SA rules that
wouldn't trigger on the original email like TO_MALFORMED.
AND: in cases when there are multiple users and/or domains redacted in
the same message, make them distinguishable and consistent so that every
time a particular address or domain appears in the original it has the
same replacement in the redaction and each unique address or domain has
its own unique replacement.