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

  1. RFC 2476 (1998)
  2. RFC 4409 (2006)
  3. RFC 6409 (2011)

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Superseded versions — historical reference only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).