Mail Monitoring MIB
RFC 2789

Document Type RFC - Proposed Standard (March 2000; No errata)
Obsoletes RFC 2249, RFC 1566
Last updated 2013-03-02
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Network Working Group                                           N. Freed
Request for Comments: 2789                                      Innosoft
Obsoletes: 2249, 1566                                           S. Kille
Category: Standards Track                           MessagingDirect Ltd.
                                                              March 2000

                          Mail Monitoring MIB

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Introduction

   This memo defines a portion of the Management Information Base (MIB)
   for use with network management protocols in the Internet community.
   Specifically, this memo extends the basic Network Services Monitoring
   MIB defined in RFC 2788 [16] to allow monitoring of Message Transfer
   Agents (MTAs). It may also be used to monitor MTA components within
   gateways.

Table of Contents

   1  The SNMP Network Management Framework .......................   2
   2  Message Flow Model ..........................................   3
   3  MTA Objects .................................................   3
   4  Definitions .................................................   4
   5  Changes made since RFC 2249 .................................  29
   6  Acknowledgements ............................................  30
   7  References ..................................................  30
   8  Security Considerations .....................................  31
   9  Author and Chair Addresses ..................................  32
   10 Full Copyright Statement ....................................  33

Freed & Kille               Standards Track                     [Page 1]
RFC 2789                  Mail Monitoring MIB                 March 2000

1.  The SNMP Network Management Framework

   The SNMP Management Framework presently consists of five major
   components:

   o   An overall architecture, described in RFC 2571 [1].

   o   Mechanisms for describing and naming objects and events for the
       purpose of management. The first version of this Structure of
       Management Information (SMI) is called SMIv1 and described in STD
       16, RFC 1155 [2], STD 16, RFC 1212 [3] and RFC 1215 [4]. The
       second version, called SMIv2, is described in STD 58, RFC 2578
       [5], STD 58, RFC 2579 [6] and STD 58, RFC 2580 [7].

   o   Message protocols for transferring management information. The
       first version of the SNMP message protocol is called SNMPv1 and
       described in STD 15, RFC 1157 [8]. A second version of the SNMP
       message protocol, which is not an Internet standards track
       protocol, is called SNMPv2c and described in RFC 1901 [9] and RFC
       1906 [10].  The third version of the message protocol is called
       SNMPv3 and described in RFC 1906 [10], RFC 2572 [11] and RFC 2574
       [12].

   o   Protocol operations for accessing management information. The
       first set of protocol operations and associated PDU formats is
       described in STD 15, RFC 1157 [8]. A second set of protocol
       operations and associated PDU formats is described in RFC 1905
       [13].

   o   A set of fundamental applications described in RFC 2573 [14] and
       the view-based access control mechanism described in RFC 2575
       [15].

   Managed objects are accessed via a virtual information store, termed
   the Management Information Base or MIB.  Objects in the MIB are
   defined using the mechanisms defined in the SMI.

   This memo specifies a MIB module that is compliant to the SMIv2. A
   MIB conforming to the SMIv1 can be produced through the appropriate
   translations. The resulting translated MIB must be semantically
   equivalent, except where objects or events are omitted because no
   translation is possible (use of Counter64). Some machine readable
   information in SMIv2 will be converted into textual descriptions in
   SMIv1 during the translation process. However, this loss of machine
   readable information is not considered to change the semantics of the
   MIB.

Freed & Kille               Standards Track                     [Page 2]
RFC 2789                  Mail Monitoring MIB                 March 2000

2.  Message Flow Model

   A general model of message flow inside an MTA has to be presented
   before a MIB can be described. Generally speaking, message flow is
   modelled as occurring in four steps:

   (1) Messages are received by the MTA from User Agents, Message
       Stores, other MTAs, and gateways.

   (2) The "next hop" for the each message is determined. This is simply
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