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Internet Draft
Mail Monitoring MIB
MADMAN Working Group
June 18, 1993
Expires: December 18, 1993
Status of this Memo
This document is an Internet Draft. Internet Drafts are working
documents of the Internet Engineering Task Force (IETF), its Areas,
and its Working Groups. Note that other groups may also distribute
working documents as Internet Drafts.
Internet Drafts are draft documents valid for a maximum of six
months. Internet Drafts may be updated, replaced, or obsoleted by
other documents at any time. It is not appropriate to use Internet
Drafts as reference material or to cite them other than as a "working
draft" or "work in progress."
Please check the I-D abstract listing contained in each Internet
Draft directory to learn the current status of this or any other
Internet Draft.
Abstract
This document extends the basic Network Services Monitoring MIB to
allow monitoring of Message Transfer Agents (MTAs).
MTA Objects
If there are one or more MTAs on the host, the following mta group may
be used to monitor them. Any number of the MTAs on a host may be
monitored. Each MTA is dealt with as a separate application and has
its own applTable entry in the Network Services Monitoring MIB.
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 occurs
in four steps:
(1) Messages are submitted to the MTA by User Agents, Message
Stores, other MTAs, and gateways.
(2) The "next hop" for the each message is determined. This is simply the
destination the message is to be delivered to; it may or may not be the
final destination of the message. Multiple "next hops" may exist for a
single message (as a result of either having multiple recipients or
distribution list expansion); this may make it necessary to duplicate
messages.
(3) Messages are converted into the format that's appropriate for the next
hop.
(4) Messages are delivered to the appropriate destination, which may be a
User Agent, Message Store, another MTA, or another gateway.
Storage of messages in the MTA occurs at some point during this
process. However, it is important to note that storage may occur at
different and possibly even multiple points during this process. For
example, some MTAs expand messages into multiple copies as they are
received. In this case (1), (2), and (3) all occur prior to storage.
Other MTAs store messages precisely as they are received and perform
all expansion and conversion processing during retransmission
processing. So here only (1) occurs prior to storage. This leads to a
situation where, in general, a measurement of messages received may
not equal a measurement of messages in store, a measurement of
messages stored may not equal a measurement of messages retransmitted,
or both.
MTA-MIB DEFINITIONS ::= BEGIN
IMPORTS
OBJECT-TYPE FROM RFC-1212
experimental, Counter, Gauge FROM RFC1155-SMI
DisplayString FROM RFC1213-MIB
applIndex, applProtoID FROM APPLICATION-MIB;
mta OBJECT IDENTIFIER ::= {experimental xxx}
mtaTable OBJECT-TYPE
SYNTAX SEQUENCE OF MTAEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The table holding information specific to an MTA."
::= {mta 1}
mtaEntry OBJECT-TYPE
SYNTAX MTAEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The entry associated with each MTA."
INDEX {applIndex}
::= {mtaTable 1}
MTAEntry ::= SEQUENCE {
mtaSubmittedMessages
Counter,
mtaStoredMessages
Gauge,
mtaDeliveredMessages
Counter,
mtaSubmittedVolume
Counter,
mtaStoredVolume
Gauge,
mtaDeliveredVolume
Counter,
mtaSubmittedRecipients
Counter,
mtaStoredRecipients
Gauge,
mtaDeliveredRecipients
Counter
}
mtaSubmittedMessages OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of messages submitted since MTA initialization."
::= {mtaEntry 1}
mtaStoredMessages OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of messages currently stored in the MTA."
::= {mtaEntry 2}
mtaDeliveredMessages OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of messages delivered since MTA initialization."
::= {mtaEntry 3}
mtaSubmittedVolume OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages submitted since MTA
initialization, measured in kbytes."
::= {mtaEntry 4}
mtaStoredVolume OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages currently stored in the MTA,
measured in kbytes."
::= {mtaEntry 5}
mtaDeliveredVolume OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages delivered since MTA
initialization, measured in kbytes."
::= {mtaEntry 6}
mtaSubmittedRecipients OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages submitted
since MTA initialization."
::= {mtaEntry 7}
mtaStoredRecipients OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages currently
stored in the MTA."
::= {mtaEntry 8}
mtaDeliveredRecipients OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages delivered
since MTA initialization."
::= {mtaEntry 9}
-- MTAs typically group inbound submissions, queue storage, and
-- outbound deliveries in some way. In the most extreme case
-- information will be maintained for each different entity that
-- submits messages and for each entity the MTA stores messages for
-- and delivers messages to. Other MTAs may elect to treat all
-- submissions equally, all queue storage equally, all deliveries
-- equally, or some combination of this.
-- 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.
-- 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" abstration one-to-one onto the MIB's group abstration.
groupTable OBJECT-TYPE
SYNTAX SEQUENCE OF GroupEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The table holding information specific to each MTA group."
::= {mta 2}
groupEntry OBJECT-TYPE
SYNTAX GroupEntry
ACCESS not-accessible
STATUS mandatory
DESCRIPTION
"The entry associated with each MTA group."
INDEX {applIndex, groupIndex}
::= {groupTable 1}
GroupEntry ::= SEQUENCE {
groupIndex
INTEGER,
groupSubmittedMessages
Counter,
groupRejectedMessages
Counter,
groupStoredMessages
Gauge,
groupDeliveredMessages
Counter,
groupSubmittedVolume
Counter,
groupStoredVolume
Gauge,
groupDeliveredVolume
Counter,
groupSubmittedRecipients
Counter,
groupStoredRecipients
Gauge,
groupDeliveredRecipients
Counter,
groupQueuedMtaAssociationIndex
INTEGER,
groupOldestMessageStored
TimeTicks,
groupInboundAssociations
Gauge,
groupOutboundAssociations
Gauge,
groupAccumulatedInboundAssociations
Counter,
groupAccumulatedOutboundAssociations
Counter,
groupLastInboundActivity
TimeTicks,
groupLastOutboundActivity
TimeTicks,
groupRejectedInboundAssociations
Counter,
groupFailedOutboundAssociations
Counter,
groupInboundRejectionReason
DisplayString,
groupOutboundConnectFailureReason
DisplayString,
groupScheduledRetry
TimeTicks,
groupMailProtocol
OBJECT IDENTIFIER,
groupName
DisplayString
}
groupIndex OBJECT-TYPE
SYNTAX INTEGER (1..2147483647)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The index associated with a group for a given MTA."
::= {groupEntry 1}
groupSubmittedMessages OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of messages submitted to this group since MTA
initialization."
::= {groupEntry 2}
groupSubmittedMessages OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of messages rejected by this group since MTA
initialization."
::= {groupEntry 3}
groupStoredMessages OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of messages currently stored in this
group's queue."
::= {groupEntry 4}
groupDeliveredMessages OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of messages delivered by this group since MTA
initialization."
::= {groupEntry 5}
groupSubmittedVolume OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages submitted to this group since
MTA initialization, measured in kbytes."
::= {groupEntry 6}
groupStoredVolume OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages currently stored in this
group's queue, measured in kbytes."
::= {groupEntry 7}
groupDeliveredVolume OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total volume of messages delivered by this group since
MTA initialization, measured in kbytes."
::= {groupEntry 8}
groupSubmittedRecipients OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages
submitted to this group since MTA initialization."
::= {groupEntry 9}
groupStoredRecipients OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages
currently stored in this group's queue."
::= {groupEntry 10}
groupDeliveredRecipients OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of recipients specified in all messages
delivered by this group since MTA initialization."
::= {groupEntry 11}
groupQueuedMtaAssociationIndex
SYNTAX INTEGER (0..2147483647)
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Reference into association table to allow correlation of this
group's active association with the association table. If
there is no active association for this group this value should
be 0."
::= {groupEntry 12}
groupOldestMessageStored
SYNTAX TimeTicks
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The age of the oldest message in this group's queue."
::= {groupEntry 13}
groupInboundAssociations OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of current associations to the group, where the
group is the responder." For dynamic single
::= {groupEntry 14}
groupOutboundAssociations OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The number of current associations to the group, where the
group is the initiator."
::= {groupEntry 15}
groupAccumulatedInboundAssociations OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of associations to the group since MTA
initialization, where the group is the responder."
::= {groupEntry 16}
groupAccumulatedOutboundAssociations OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of associations from the group since MTA
initialization, where the group was the initiator."
::= {groupEntry 17}
groupLastInboundActivity OBJECT-TYPE
SYNTAX TimeTicks
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Time since the last time that this group had an active
inbound association for purposes of message submission."
::= {groupEntry 18}
groupLastOutboundActivity OBJECT-TYPE
SYNTAX TimeTicks
ACCESS read-only
STATUS mandatory
DESCRIPTION
"Time since the last time that this group had an
outbound association for purposes of message delivery."
::= {groupEntry 19}
groupRejectedInboundAssociations OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number of inbound associations the group has
rejected, since MTA initialization."
::= {groupEntry 20}
groupFailedOutboundAssociations OBJECT-TYPE
SYNTAX Counter
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The total number associations where the group was the
initiator and association establishment has failed,
since MTA initialization."
::= {groupEntry 21}
groupInboundRejectionReason
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The failure reason, if any, for the last connection this
group refused to respond to. An empty string indicates that
the last attempt was successful. If no connection attempt has
been made since the MTA was initializaed the value should be
'never'."
::= {groupEntry 22}
groupOutboundConnectFailureReason
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The failure reason, if any, for the last connection attempt
this group initiated. An empty string indicates that the last
attempt was successful. If no connection attempt has been
made since the MTA was initializaed the value should be
'never'."
::= {groupEntry 23}
groupScheduledRetry OBJECT-TYPE
SYNTAX TimeTicks
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The scheduled time at which this group will next attempt to
make a connection. This time is relative to the query time."
::= {groupEntry 24}
groupMailProtocol OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"An identification of the protocol being used by this group.
For an group employing OSI protocols, this will be the
Application Context. For Internet applications, the IANA
maintains a registry of the OIDs which correspond to well-known
message transfer protocols. If the application protocol is not
listed in the registry, the value {applProtoID port} is used
where 'port' corresponds to the primary port being used by the
group."
::= {groupEntry 25}
groupName OBJECT-TYPE
SYNTAX DisplayString
ACCESS read-only
STATUS mandatory
DESCRIPTION
"A descriptive name for the name. If this group connects to
a single remote MTA this should be the name of that MTA. If
this in turn is an Internet MTA this should be the domain name.
For an OSI MTA it should be the string encoded distinguished
name of the managed object using the format defined in RFC-?.
For X.400(1984) MTAs which do not have a Distinguished Name,
the RFC-1327 syntax 'mta in globalid' should be used."
::= {groupEntry 26}
END
Expires: December 18, 1993