SMTP Service Extension for Message Size Declaration
RFC 1427, “SMTP Service Extension for Message Size Declaration”, is a Proposed Standard document published in February 1993 by J. Klensin, N. Freed, K. Moore. It has been obsoleted by RFC 1653 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This memo defines an extension to the SMTP service whereby an SMTP client and server may interact to give the server an opportunity to decline to accept a message (perhaps temporarily) based on the client's estimate of the message size. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 1427 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 1424 Privacy Enhancement for Internet Electronic Mail: Part IV: Key Certification and Related Services
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