<?xml version='1.0'?>

<reference anchor='RFC1651'>

<front>
<title>SMTP Service Extensions</title>
<author initials='J.' surname='Klensin' fullname='John Klensin,'>
<organization>MCI Data Services Division</organization>
<address>
<postal>
<street>2100 Reston Parkway</street>
<street>6th floor</street>
<city>Reston</city>
<region>VA</region>
<code>22091</code>
<country>US</country></postal>
<phone>+1 703 715 7361</phone>
<facsimile>+1 703 715 7435</facsimile>
<email>klensin@mci.net</email></address></author>
<author initials='N.' surname='Freed' fullname='Ned Freed'>
<organization>Innosoft International, Inc.</organization>
<address>
<postal>
<street>1050 East Garvey Avenue South</street>
<city>West Covina</city>
<region>CA</region>
<code>91790</code>
<country>US</country></postal>
<phone>+1 818 919 3600</phone>
<facsimile>+1 818 919 3614</facsimile>
<email>ned@innosoft.com</email></address></author>
<author initials='M.' surname='Rose' fullname='Marshall T. Rose'>
<organization>Dover Beach Consulting, Inc.</organization>
<address>
<postal>
<street>420 Whisman Court</street>
<city>Mountain View</city>
<region>CA</region>
<code>94043-2186</code>
<country>US</country></postal>
<phone>+1 415 968 1052</phone>
<facsimile>+1 415 968 2510</facsimile>
<email>mrose@dbc.mtview.ca.us</email></address></author>
<author initials='E.' surname='Stefferud' fullname='Einar A. Stefferud'>
<organization>Network Management Associates, Inc.</organization>
<address>
<postal>
<street>17301 Drey Lane</street>
<city>Huntington Beach</city>
<region>CA</region>
<code>92647-5615</code>
<country>US</country></postal>
<phone>+1 714 842 3711</phone>
<facsimile>+1 714 848 2091</facsimile>
<email>stef@nma.com</email></address></author>
<author initials='D.' surname='Crocker' fullname='Dave Crocker'>
<organization>Silicon Graphics, Inc.</organization>
<address>
<postal>
<street>2011 N. Shoreline Blvd.</street>
<street>P.O. Box 7311</street>
<city>Mountain View</city>
<region>CA</region>
<code>94039</code>
<country>US</country></postal>
<phone>+1 415 390 1804</phone>
<facsimile>+1 415 962 8404</facsimile>
<email>dcrocker@sgi.com</email></address></author>
<date month='July' year='1994' />
<abstract>
<t>This memo defines a framework for extending the SMTP service by defining a means whereby a server SMTP can inform a client SMTP as to the service extensions it supports. Standard extensions to the SMTP service are registered with the IANA.  This framework does not require modification of existing SMTP clients or servers unless the features of the service extensions are to be requested or provided.</t></abstract></front>

<seriesInfo name='RFC' value='1651' />
</reference>
