mta-mib.txt

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MTA-MIB DEFINITIONS ::= BEGIN

IMPORTS
   OBJECT-TYPE, Counter32, Gauge32, MODULE-IDENTITY, mib-2
     FROM SNMPv2-SMI
   TimeInterval
     FROM SNMPv2-TC
   MODULE-COMPLIANCE, OBJECT-GROUP
     FROM SNMPv2-CONF
   SnmpAdminString
       FROM SNMP-FRAMEWORK-MIB
   applIndex, URLString
     FROM NETWORK-SERVICES-MIB;

mta MODULE-IDENTITY
   LAST-UPDATED "200003030000Z"
   ORGANIZATION "IETF Mail and Directory Management Working Group"
   CONTACT-INFO
     "        Ned Freed

      Postal: Innosoft International, Inc.
              1050 Lakes Drive
              West Covina, CA 91790
              US

      Tel: [phone]
      Fax: [phone]

      E-Mail: [e-mail]"
   DESCRIPTION
     "The MIB module describing Message Transfer Agents (MTAs)"
   REVISION "200003030000Z"
   DESCRIPTION
     "This revision, published in RFC 2789, changes a number of
      DisplayStrings to SnmpAdminStrings. Note that this change

      is not strictly supported by SMIv2.  However, the alternative
      of deprecating the old objects and defining new objects
      would have a more adverse impact on backward compatibility
      and interoperability, given the particular semantics of
      these objects.  The defining reference for distinguished
      names has also been updated from RFC 1779 to RFC 2253."
   REVISION "199905120000Z"
   DESCRIPTION
     "This revision fixes a number of technical problems found in
      previous versions: The conformance groups for different
      versions of this MIB have been corrected, the recommendation
      that an empty string be returned if the last operation was
      successful has been removed from
      mtaGroupInboundRejectionReason and
      mtaGroupOutboundConnectFailureReason as it conflicts
      with the stated purpose of these variables, and the
      required mtaStatusCode entry has been added to
      MtaGroupErrorEntry.  It should be noted that this last
      change in no way affects the bits on the wire."
   REVISION "199708170000Z"
   DESCRIPTION
     "This revision, published in RFC 2249, adds the
      mtaGroupDescription and mtaGroupURL fields, conversion
      operation counters, a group hierarchy description mechanism,
      counters for specific errors, oldest message IDs, per-MTA
      and per-group loop counters, and a new table for tracking
      any errors an MTA encounters."
   REVISION "199311280000Z"
   DESCRIPTION
     "The original version of this MIB was published in RFC 1566"
   ::= {mib-2 28}

mtaTable OBJECT-TYPE
   SYNTAX SEQUENCE OF MtaEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
     "The table holding information specific to an MTA."
   ::= {mta 1}

mtaEntry OBJECT-TYPE
   SYNTAX MtaEntry
   MAX-ACCESS not-accessible
   STATUS current
   DESCRIPTION
     "The entry associated with each MTA."
   INDEX {applIndex}
   ::= {mtaTable 1}

MtaEntry ::= SEQUENCE {
   mtaReceivedMessages
     Counter32,
   mtaStoredMessages
     Gauge32,
   mtaTransmittedMessages
     Counter32,
   mtaReceivedVolume
     Counter32,
   mtaStoredVolume
     Gauge32,
   mtaTransmittedVolume
     Counter32,
   mtaReceivedRecipients
     Counter32,
   mtaStoredRecipients
     Gauge32,
   mtaTransmittedRecipients
     Counter32,
   mtaSuccessfulConvertedMessages
     Counter32,
   mtaFailedConvertedMessages
     Counter32,
   mtaLoopsDetected
     Counter32
}

mtaReceivedMessages OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of messages received since MTA initialization.
      This includes messages transmitted to this MTA from other
      MTAs as well as messages that have been submitted to the
      MTA directly by end-users or applications."
   ::= {mtaEntry 1}

mtaStoredMessages OBJECT-TYPE
   SYNTAX Gauge32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of messages currently stored in the MTA.
      This includes messages that are awaiting transmission to
      some other MTA or are waiting for delivery to an end-user
      or application."
   ::= {mtaEntry 2}

mtaTransmittedMessages OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of messages transmitted since MTA initialization.
      This includes messages that were transmitted to some other
      MTA or are waiting for delivery to an end-user or
      application."
   ::= {mtaEntry 3}

mtaReceivedVolume OBJECT-TYPE
   SYNTAX Counter32
   UNITS "K-octets"
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total volume of messages received since MTA
      initialization, measured in kilo-octets.  This volume should
      include all transferred data that is logically above the mail
      transport protocol level.  For example, an SMTP-based MTA
      should use the number of kilo-octets in the message header
      and body, while an X.400-based MTA should use the number of
      kilo-octets of P2 data.  This includes messages transmitted
      to this MTA from other MTAs as well as messages that have
      been submitted to the MTA directly by end-users or
      applications."
   ::= {mtaEntry 4}

mtaStoredVolume OBJECT-TYPE
   SYNTAX Gauge32
   UNITS "K-octets"
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total volume of messages currently stored in the MTA,
      measured in kilo-octets.  This volume should include all
      stored data that is logically above the mail transport
      protocol level.  For example, an SMTP-based MTA should
      use the number of kilo-octets in the message header and
      body, while an X.400-based MTA would use the number of
      kilo-octets of P2 data.  This includes messages that are
      awaiting transmission to some other MTA or are waiting
      for delivery to an end-user or application."
   ::= {mtaEntry 5}

mtaTransmittedVolume OBJECT-TYPE
   SYNTAX Counter32
   UNITS "K-octets"
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total volume of messages transmitted since MTA
      initialization, measured in kilo-octets.  This volume should
      include all transferred data that is logically above the mail
      transport protocol level.  For example, an SMTP-based MTA
      should use the number of kilo-octets in the message header
      and body, while an X.400-based MTA should use the number of
      kilo-octets of P2 data.  This includes messages that were
      transmitted to some other MTA or are waiting for delivery
      to an end-user or application."
   ::= {mtaEntry 6}

mtaReceivedRecipients OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of recipients specified in all messages
      received since MTA initialization.  Recipients this MTA
      has no responsibility for, i.e. inactive envelope
      recipients or ones referred to in message headers,
      should not be counted even if information about such
      recipients is available.  This includes messages
      transmitted to this MTA from other MTAs as well as
      messages that have been submitted to the MTA directly
      by end-users or applications."
   ::= {mtaEntry 7}

mtaStoredRecipients OBJECT-TYPE
   SYNTAX Gauge32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of recipients specified in all messages
      currently stored in the MTA.  Recipients this MTA has no
      responsibility for, i.e. inactive envelope recipients or
      ones referred to in message headers, should not be
      counted.  This includes messages that are awaiting
      transmission to some other MTA or are waiting for
      delivery to an end-user or application."
   ::= {mtaEntry 8}

mtaTransmittedRecipients OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The total number of recipients specified in all messages
      transmitted since MTA initialization.  Recipients this
      MTA had no responsibility for, i.e. inactive envelope
      recipients or ones referred to in message headers,
      should not be counted.  This includes messages that were
      transmitted to some other MTA or are waiting for
      delivery to an end-user or application."
   ::= {mtaEntry 9}

mtaSuccessfulConvertedMessages OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of messages that have been successfully
      converted from one form to another since MTA
      initialization."
   ::= {mtaEntry 10}

mtaFailedConvertedMessages OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "The number of messages for which an unsuccessful
      attempt was made to convert them from one form to
      another since MTA initialization."
   ::= {mtaEntry 11}

mtaLoopsDetected OBJECT-TYPE
   SYNTAX Counter32
   MAX-ACCESS read-only
   STATUS current
   DESCRIPTION
     "A message loop is defined as a situation where the MTA
      decides that a given message will never be delivered to
      one or more recipients and instead will continue to
      loop endlessly through one or more MTAs.  This variable
      counts the number of times the MTA has detected such a
      situation since MTA initialization. Note that the
      mechanism MTAs use to detect loops (e.g., trace field
      counting, count of references to this MTA in a trace
      field, examination of DNS or other directory information,
      etc.), the level at which loops are detected (e.g., per
      message, per recipient, per directory entry, etc.), and
      the handling of a loop once it is detected (e.g., looping

      messages are held, looping messages are bounced or sent
      to the postmaster, messages that the MTA knows will loop
      won't be accepted, etc.) vary widely from one MTA to the
      next and cannot be inferred from this variable."
   ::= {mtaEntry 12}

-- MTAs typically group inbound reception, queue storage, and
-- outbound transmission in some way, rather than accounting for
-- such operations only across the MTA as a whole. In the most
-- extreme case separate information will be maintained for each
-- different entity that receives messages and for each entity
-- the MTA stores messages for and delivers messages to.  Other
-- MTAs may elect to treat all reception equally, all queue
-- storage equally, all deliveries equally, or some combination
-- of this. Overlapped groupings are also possible, where an MTA
-- decomposes its traffic in different ways for different
-- purposes.

-- In any case, a grouping abstraction is an extremely useful for
-- breaking down the activities of an MTA. For purposes of
-- labelling this will be called a "group" in this MIB.

-- Each group contains all the variables needed to monitor all
-- aspects of an MTA's operation.  However, the fact that all
-- groups contain all possible variables does not imply that all
-- groups must use all possible variables. For example, a single
-- group might be used to monitor only one kind of event (inbound
-- processing, outbound processing, or storage). In this sort of
-- configuration any counters that are unused as a result of a
-- given MTA's use of the group construct must be inaccessible;
-- e.g., returning either a noSuchName error (for an SNMPv1 get),
-- or a noSuchInstance exception (for an SNMPv2 get).

-- Groups can be created at any time after MTA initialization. Once
-- a group is created it should not be deleted or its mtaGroupIndex
-- changed unless the MTA is reinitialized.

-- Groups are not necessarily mutually exclusive. A given event may
-- be recorded by more than one group, a message may be seen as
-- stored by more than one group, and so on.  Groups should be all
-- inclusive, however: if groups are implemented all aspects of an
-- MTA's operation should be registered in at least one group.
-- This freedom lets implementors use different sets of groups to
-- provide different "views" of an MTA.

-- The possibility of overlap between groups means that summing
-- variables across groups may not produce values equal to those in
-- the mtaTable. mtaTable should always provide accurate information

-- about the MTA as a whole.

-- The term "channel" is often used in MTA implementations; channels
-- are usually, but not always, equivalent to a group. However,
-- this MIB does not use the term "channel" because there is no
-- requirement that an MTA supporting this MIB has to map its
-- "channel" abstraction one-to-one onto the MIB's group abstraction.

-- An MTA may create a group or group of groups at any time. Once
-- created, however, an MTA cannot delete an entry for a group from
-- the group table.  Deletion is only allowed when the MTA is
-- reinitialized, and is not required even then.  This restriction
-- is imposed so that monitoring agents can rely on group
-- assignments being consistent across multiple query operations.

-- Groups may be laid out so as to form a hierarchical arrangement,
-- with some groups acting as subgroups for other groups.
-- Alternately, disjoint groups of groups may be used to provide
-- different sorts of "snapshots" of MTA operation.  The
-- mtaGroupHierarchy variable provides an indication of how each
-- group fits into the overall arrangement being used.

-- Note that SNMP also defines and uses term "group". MTA groups are
-- NOT the same as SNMP groups.

mtaGroupTable OBJECT-TYPE
    SYNTAX SEQUENCE OF MtaGroupEntry
    MAX-ACCESS not-accessible
    STATUS current
    DESCRIPTION
      "The table holding information specific to each MTA group."
    ::= {mta 2}

mtaGroupEntry OBJECT-TYPE
    SYNTAX MtaGroupEntry
    MAX-ACCESS not-accessible
    STATUS current
    DESCRIPTION
      "The entry associated with each MTA group."
    INDEX {applIndex, mtaGroupIndex}
    ::= {mtaGroupTable 1}

MtaGroupEntry ::= SEQUENCE {
   mtaGroupIndex
       INTEGER,
   mtaGroupReceivedMessages
       Counter32,
   mtaGroupRejectedMessages

       Counter32,
   mtaGroupStoredMessages
       Gauge32,
   mtaGroupTransmittedMessages
       Counter32,
   mtaGroupReceivedVolume
       Counter32,
   mtaGroupStoredVolume
       Gauge32,
   mtaGroupTransmittedVolume
       Counter32,
   mtaGroupReceivedRecipients
       Counter32,
   mtaGroupStoredRecipients
       Gauge32,
   mtaGroupTransmittedRecipients
       Counter32,
   mtaGroupOldestMessageStored
       TimeInterval,
   mtaGroupInboundAssociations
       Gauge32,
   mtaGroupOutboundAssociations
       Gauge32,
   mtaGroupAccumulatedInboundAssociations
       Counter32,
   mtaGroupAccumulatedOutboundAssociations
       Counter32,
   mtaGroupLastInboundActivity
       TimeInterval,
   mtaGroupLastOutboundActivity
       TimeInterval,
   mtaGroupLastOutboundAssociationAttempt