RFC 9422: The LIMITS SMTP Service Extension
Recent RFCs 2024-02-08
Summary:
This document defines a LIMITS extension for the Simple Mail Transfer
Protocol (SMTP), including submission, as well as the Local Mail
Transfer Protocol (LMTP). It also defines an associated limit
registry. The extension provides the means for an SMTP, submission,
or LMTP server to inform the client of limits the server intends to
apply to the protocol during the current session. The client is then
able to adapt its behavior in order to conform to those limits.