https://app.knowbase.one/vault/rfc/docid/1598
RFC1426: SMTP Service Extension for 8bit-MIMEtransport
Network Working Group J. Klensin, WG Chair Request for Comments: 1426 United Nations University N. Freed, Editor Innosoft International, Inc. ...
https://app.knowbase.one/vault/rfc/docid/1847
RFC1652: SMTP Service Extension for 8bit-MIMEtransport
Network Working Group J. Klensin, WG Chair Request for Comments: 1652 MCI Obsoletes: 1426 N. Freed, Editor Category: Standards Track Innosoft ...