DKIM2 keys, ASN origin dispute, RATS drafts

IETF lists advanced email authentication and remote attestation work while operators examined an unauthorized ASN origin on NANOG. The day mixed concrete draft updates with routing security discussion.

DKIM2 key validity field debated

The DKIM working group is discussing a proposal to add a dedicated key validity field to the DKIM2 draft. Participants compared JSON recipes with flat tags for expressing the new information. Clearer lifetime controls on signing keys would affect how mail authentication systems handle key rotation and revocation.

Unauthorized origin reported for AS27421

An operator reported that AS27421 appeared with an unauthorized origin from Brazil. The NANOG thread examined RPKI, ASPA, and escalation through upstream providers. Network operators continue to rely on these mechanisms when origin validation fails in the wild.

TACRA draft submitted to RATS

A new RATS draft on Trustworthy Acquisition of Credentials using Remote Attestation (TACRA) was submitted. It received one detailed technical review and a pull request that adds SEV-SNP binding. The work explores how remote attestation can support safer credential issuance.

Adoption call opens for verifiable geo-fence

The RATS working group started a two-week adoption call for draft-lkspa-rats-verifiable-geo-fence. Multiple co-authors and contributors voiced support. The draft would allow systems to prove location constraints through attestation for location-sensitive trust decisions.

SMTPUTF8 syntax draft updated

An author posted an update to the smtputf8-syntax draft that aligns SMTPUTF8 atoms with PRECIS and allows ASCII space in quoted addresses. Minor discussion followed in the mailmaint working group. The change keeps internationalized email addressing consistent with existing string preparation rules.