Analysis of Threats Motivating DomainKeys Identified Mail (DKIM). - Jim Fenton (RFC, 2006)

DomainKeys Identified Mail (DKIM): Using Digital Signatures for Domain Verification. - Barry Leiba; Jim Fenton (CEAS, 2007)

DomainKeys Identified Mail (DKIM) Signatures. - Eric Allman; Jon Callas; Mark Delany; Miles Libbey; Jim Fenton; Michael Thomas (RFC, 2007)

DomainKeys Identified Mail (DKIM) Author Domain Signing Practices (ADSP). - Eric Allman; Jim Fenton; Mark Delany; John R. Levine (RFC, 2009)

SMTP Require TLS Option. - Jim Fenton (RFC, 2019)