ARC chain analyzer: trace authentication through forwarders.

email forwarding breaks DMARC.

when a message is forwarded through a mailing list or university relay, the original SPF alignment is lost.

ARC (Authenticated Received Chain, RFC 8617) preserves the authentication results across hops.

I built it because forwarding is the #1 source of false-positive DMARC failures.

https://dmarcguard.io/tools/arc-chain-analyzer/

#DMARC #EmailSecurity #ARC #RFC8617 #EmailForwarding

Heutige Abendlektüre:
#RFC8617 The Authenticated Received Chain (ARC) Protocol

Warum?
Warum nicht 🤷‍♂️