On 12/02/21 7:12 pm, Bill Cole wrote:
Mail transport often involves MTAs not under the control of the original sender or ultimate recipient or the authorities for the sender's domain. Traditional forwarding (e.g. ~/.forward) still exists and many systems supporting it run Sendmail, which will make usually-harmless changes to some edge-case To and Cc headers and break DKIM signatures.
I'm happy to accept that there are edge-cases where applying the published DMARC policy will cause problems. However in my case I have only a few users, none of whom use forwarding (in or out), and I've found DMARC to be a useful tool (just one of many in the tool box) for filtering SPAM. YMMV. :-)
