This article contains the complete list of changes implemented in ORF 6.6 compared to the previous 6.5 release.

Changes in version ORF 6.6

• NEW: ARC Signing
  The new version adds support for ARC (Authenticated Received Chain) allowing ORF to sign the email's original authentication result and store it in the message header in a verifiable format. This enables subsequent ARC-enabled mails transfer agents to validate the email even if it fails the local SPF, DKIM and DMARC checks.
• NEW: ARC Test
  Emails that would fail the SPF, DKIM or DMARC tests as a result of intermediate processing can be "rescued" by ORF by recycling the original email authentication results left in the message header by trusted ARC signers.
• NEW: Exchange Transport Agent
  A third transport agent has been introduced which is responsible for adding digital signatures to incoming messages when ARC Signing is enabled.
• CHANGE: Pending Submissions item handling
  Items sent from the Log Viewer to blacklists, whitelists and exception lists are no longer used by the ORF service immediately.
• CHANGE: New category in the navigation bar
  The settings pages of the DMARC, DKIM and SPF tests have been moved to a new category called "Authentication".
• BUGFIX: Unexpected SPF Test error
  Rather than ignoring the email, the SPF Test ended with an error when the following two conditions were met: the sender was excluded from the SPF check and the SPF Test was allowed to run at the Before Arrival filtering point.
• BUGFIX: IPv6 scope-id parsing error
  Link-local (intranet) IPv6 addresses ending with a scope-id were not recognized as valid IPv6 addresses, which caused benign errors on systems where IP-based tests were allowed to run at the Before Arrival filtering point.
• Further minor changes and improvements.