LEMONADE Architecture - Supporting Open Mobile Alliance (OMA) Mobile Email (MEM) Using Internet Mail
RFC 5442

Document Type RFC - Informational (March 2009; No errata)
Last updated 2013-03-02
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IESG IESG state RFC 5442 (Informational)
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Network Working Group                                          E. Burger
Request for Comments: 5442                                    Consultant
Category: Informational                                       G. Parsons
                                                         Nortel Networks
                                                              March 2009

    LEMONADE Architecture - Supporting Open Mobile Alliance (OMA)
                 Mobile Email (MEM) Using Internet Mail

Status of This Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

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Abstract

   This document specifies the architecture for mobile email, as
   described by the Open Mobile Alliance (OMA), using Internet Mail
   protocols.  This architecture was an important consideration for much
   of the work of the LEMONADE (Enhancements to Internet email to
   Support Diverse Service Environments) working group in the IETF.
   This document also describes how the LEMONADE architecture meets
   OMA's requirements for their Mobile Email (MEM) service.

Burger & Parsons             Informational                      [Page 1]
RFC 5442                 LEMONADE Architecture                March 2009

Table of Contents

   1. Introduction ....................................................2
   2. OMA Mobile Email (MEM) ..........................................2
      2.1. OMA MEM Requirements .......................................2
      2.2. OMA MEM Architecture .......................................3
           2.2.1. OMA MEM Logical Architecture ........................3
           2.2.2. OMA MEM Deployment Issues ...........................4
      2.3. OMA MEM Technical Specification ............................6
   3. IETF LEMONADE Architecture ......................................6
      3.1. Relationship between the OMA MEM and LEMONADE Logical
           Architectures ..............................................7
      3.2. LEMONADE Realization of OMA MEM with
           non-LEMONADE-Compliant Servers .............................9
           3.2.1. LEMONADE Realization of OMA MEM with
                  non-LEMONADE IMAP Servers ...........................9
           3.2.2. LEMONADE Realization of OMA MEM with non-IMAP
                  Servers ............................................10
   4. Filters and Server-to-Client Notifications and LEMONADE ........11
   5. Security Considerations ........................................13
   6. Acknowledgements ...............................................13
   7. Informative References .........................................13

1.  Introduction

   This document describes the architecture of OMA Mobile Email (MEM)
   using Internet Mail protocols defined by the IETF.  The LEMONADE
   working group has enhanced many of these protocols for use in the
   mobile environment.  The LEMONADE profile [PROFILE] and its revision,
   [PROFILE-bis], summarize such protocols and protocol use.  This
   document shows how the OMA MEM Requirements document [MEM-req], OMA
   MEM Architecture [MEM-arch], and OMA MEM Technical Specification
   [MEM-ts] relate to the work of LEMONADE in the IETF.

2.  OMA Mobile Email (MEM)

   The OMA Mobile Email (MEM) sub-working group has spent some time
   studying the requirements and architecture of mobile email.  IETF
   LEMONADE has been liaising with them and has based much of its
   Internet Mail enhancements on their input.  This section summarizes
   the output of the OMA.

2.1.  OMA MEM Requirements
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