RFC 1870 support in Archiveopteryx

Abstract from the RFC text:

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.

Notes: None

There are no errata for RFC 1870 (as of 2008-08-25).

Used in the following classes: