https://app.knowbase.one/vault/rfc/docid/4876
RFC4468: Message Submission BURL Extension
Network Working Group C. Newman Request for Comments: 4468 Sun Microsystems Updates: 3463 May 2006 Category: Standards Track Message Submission BURL Exte...
https://app.knowbase.one/vault/rfc/docid/4966
RFC4550: Internet Email to Support Diverse Service Environments (Lemonade) Profile
Network Working Group S. Maes Request for Comments: 4550 Oracle Category: Standards Track A. Melnikov Isode Ltd. ...