@techreport{brotman-srds-02, number = {draft-brotman-srds-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/html/draft-brotman-srds-02}, author = {Alex Brotman}, title = {{SMTP Enhanced Status Codes for Potentially Unwanted Mail}}, pagetotal = 9, year = 2022, month = apr, day = 4, abstract = {We define a method by which an SMTP receiver can immediately notify a sender that their message is suspected to be unwanted, although it may still be accepted.}, }