Message Submission for Mail
This specification has been revised 2 times since RFC 2476 (1998). Each document below formally obsoleted the one before it; the versions still in force are listed first.
Revision timeline
Current version — implement against this
Superseded versions — historical reference only
This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 6409 (November 2011).