MSG311MSG311Exchange 2007 Transport and Exchange 2007 Transport and Routing ArchitectureRouting Architecture

What Customers Have Asked For?What Customers Have Asked For?

Cheaper to ManageCheaper to ManageZero Admin Zero Admin –– More Automatic Configuration More Automatic Configuration

Eliminate RedundancyEliminate Redundancy

Transparent Routing Transparent Routing –– No Link State! No Link State!

Easy Mailflow DiagnosisEasy Mailflow Diagnosis

Manage BandwidthManage BandwidthAvoid Unnecessary HopsAvoid Unnecessary Hops

Single Instance Over Slow ConnectionsSingle Instance Over Slow Connections

InteroperabilityInteroperabilityExchange 200x RG and RGC SupportExchange 200x RG and RGC Support

Exchange 200x EDK RoutingExchange 200x EDK Routing

Simple Foreign System InteropSimple Foreign System Interop

Exchange 200x Routing Exchange 200x Routing StrengthsStrengths

Queue @ Point of ProblemQueue @ Point of ProblemSo important we had to DCR it in So important we had to DCR it in Exchange 2000Exchange 2000

Bandwidth ControlBandwidth ControlVery hard because itVery hard because it’’s Mostly Manuals Mostly Manual

Delayed Fan-OutDelayed Fan-OutNecessary for Low-Bandwidth Connections Necessary for Low-Bandwidth Connections (e.g. Branch Office)(e.g. Branch Office)Saves BandwidthSaves Bandwidth

Reducing Cost & ComplexityReducing Cost & ComplexityExchange 2007 Server RolesExchange 2007 Server Roles

Hub Transport

MAPI RPCUser &

Config DataMailbox Server

Mailbox Server

MailboxServer

AD

Mailbox Server

Edge Transport

EdgeSync EdgeSync

Recip SMTP AddressesPer User SAFE Sender Lists

ETC.SecureLDAP

ADAM

User &Connector &Config Data

Hub Transport

MAPI RPC

Transport Event/Message API

AS SM MP SMAV

SMTPSubmission Queue

DeliveryQueue

SMTPReceive

SMTP

ReplayDirectory

SMTPSend

Exchange 2007 TransportExchange 2007 Transport

Drop Directory

Drop Directory

Non-SMTPConnector

ForeignSystem(Notes)

ForeignSystem

(e.g. Notes)

CAT

Systems Management (Tasks)

AD API

Exchange 2007 Mailbox

Submit(MAPI SMTP)

ADMAPI RPC

Delivery(SMTP MAPI)

MAPI RPC

ResolveRecips

AD rich Routing

ContentConv

Sending and Receiving MailSending and Receiving MailHub Transport and Mailbox Deployment Scenarios

One Hub & one MBX on the same physical machine

Multiple Hub & MBXs Roles (grouped by AD Sites)

Features:Hub will deliver to any MBX in local AD site

MBX will submit to any Hub in local AD Site (local Hub preferred)

All Mail is Routed through a Hub Role

Deterministic (without failure, system will always pick the same associations)

Hubs automatically Load Balance

Centralized remote admin via AD

Transport & RoutingTransport & Routing Direct RelayDirect Relay

Prefers direct IP Connectivity between Prefers direct IP Connectivity between source and destinationsource and destinationAvoid redundant intermediate machine Avoid redundant intermediate machine transferstransfersRely on IP Networks for reroute in case of Rely on IP Networks for reroute in case of network failuresnetwork failures

Deterministic RoutingDeterministic RoutingNo longer relies on Exchange up/down stateNo longer relies on Exchange up/down stateExchange 2007 doesnExchange 2007 doesn’’t consume or t consume or propagate Link State informationpropagate Link State information

Automatic ConfigurationAutomatic ConfigurationDefault connectorsDefault connectors

7

AD Site ! AD Site 3AD Site 2 AD Site 4

AD and IP Networks – Exchange AD and IP Networks – Exchange 20072007You’re Already Configured for You’re Already Configured for Mailflow!Mailflow!

Routing Group 1 Routing Group 2 Routing Group 3

From malcolmp@MBXBTo: lwarman@MBXG;

From malcolmp@MBXBTo: lwarman@MBXG;

Physical Network IP LayerPhysical Network IP LayerAlways used for mail transfer between two pointsAlways used for mail transfer between two points

AD Site AD Site –– Logical layer defining a physical grouping Logical layer defining a physical groupingDefines a back-off path used only if direct relay is not possibleDefines a back-off path used only if direct relay is not possible

Routing Groups Routing Groups –– Exchange specific logical layer Exchange specific logical layerDefines next hop resolution that is always used to advance mailDefines next hop resolution that is always used to advance mail

AD and IP Networks – Exchange AD and IP Networks – Exchange 20032003

In Exchange 2003, not In Exchange 2003, not usedused

Topology DescriptionsTopology Descriptions

Uses Logical Topology for Uses Logical Topology for Back-OffBack-Off only onlyQueue at the Point of FailureQueue at the Point of FailureBifurcation RequiredBifurcation RequiredForced through Hub SitesForced through Hub Sites

Windows Active Directory Sites for Windows Active Directory Sites for Logical Topology DescriptionLogical Topology Description

Uses Active Directory Sites, IP Site Links, IP Uses Active Directory Sites, IP Site Links, IP Site Link CostingSite Link CostingThe world is no longer an X.400 The world is no longer an X.400 architecturearchitectureNo Exchange specific Configuration No Exchange specific Configuration requiredrequired

9

Exchange 200x vs Exchange Exchange 200x vs Exchange 20072007

10

Exchange 200xExchange 200x Exchange 2007Exchange 2007

Spending unnecessary Spending unnecessary resources when delivering resources when delivering messagesmessagesNo leverage of networkNo leverage of network

Direct relayDirect relay

Leverage IP Network for Leverage IP Network for RerouteReroute

Necessary to design routing Necessary to design routing topologytopology

Leverage AD Site topologyLeverage AD Site topology

Necessary to configure Necessary to configure routing group connectorsrouting group connectors

Automatic creation of Automatic creation of connectorsconnectors

Not always transparent how Not always transparent how routing decisions are maderouting decisions are madeUsage of bandwidth to Usage of bandwidth to exchange routing informationexchange routing information

Transparent routing tableTransparent routing tableNo exchange of Link State No exchange of Link State informationinformation

Queue at point of FailureQueue at point of Failure Queue at point of failureQueue at point of failure

Exchange 200x vs Exchange Exchange 200x vs Exchange 20072007

11

Exchange 200xExchange 200x Exchange 2007Exchange 2007

Need to configure Need to configure restrictions for each restrictions for each connectorconnector

Global Transport RulesGlobal Transport Rules

No automatic way to No automatic way to configure routing connectorsconfigure routing connectors

Enterprise DeploymentEnterprise DeploymentEdgeSyncEdgeSync

No mechanism for No mechanism for troubleshooting mail flow troubleshooting mail flow problemsproblems

Mail Flow Troubleshooting Mail Flow Troubleshooting Wizard ExMFA based on Wizard ExMFA based on ExBPA technologyExBPA technology

Difficult to implement Difficult to implement compliance rulescompliance rules

Easy and very comprehensive Easy and very comprehensive compliance infrastructurecompliance infrastructure

Difficult to implement and Difficult to implement and troubleshoot Event Sinkstroubleshoot Event Sinks

New Agent concept and New Agent concept and agents can be implemented agents can be implemented in managed codein managed code

Cos

t = 1

00

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost =

100 C

ost =

100

Cost = 100

Cost = 100

Site 1 Site 2

Site 3

Site 11

Site 12

Site 13

Site 21

Site 22

Site 23

Site 31 Site 32 Site 33

Direct Connect

Backoff Route #1Backoff Route #2

Final Backoff

Originator

Recipient #1

““BestBest”” Route Between AD Sites Route Between AD Sites

Cos

t = 1

00

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost =

100

Co

st = 100

Cost = 100

Cost = 100

Site 1 Site 2

Site 3

Site 11

Site 12

Site 13

Site 21

Site 22

Site 23

Site 31 Site 32 Site 33

Bifurcation effect on routing Bifurcation effect on routing (#1)(#1)

Direct Connect Direct Connect

Direct Connect

Bifurcate

Originator

Recipient #2

Recipient #1

Cos

t = 1

00

Cost = 100

Cost = 300

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost =

100

Co

st = 100

Cost = 100

Cost = 100

Site 1 Site 2

Site 3

Site 11

Site 12

Site 13

Site 21

Site 22

Site 23

Site 31 Site 32 Site 33

Bifurcation effect on routing Bifurcation effect on routing (#2)(#2)

Direct Connect Direct Connect

Direct Connect

Bifurcate

Originator

Recipient #2

Recipient #1

Cos

t = 1

00

Cost = 100

Cost = 300

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost =

100 C

ost =

100

Cost = 100

Cost = 100

Site 1 Site 2

Site 3

Site 11

Site 12

Site 13

Site 21

Site 22

Site 23

Site 31 Site 32 Site 33

Explicit Hub SitesExplicit Hub Sites

Direct Connect Direct Connect

Direct Connect

Bifurcate

Originator

Recipient #2

Recipient #1

Site1, Site2 and Site3 all designated as explicit hub sites

Direct Connect

Direct Connect

Allow/DenyAllow/DenyBlock unwanted Block unwanted mail flow with mail flow with Rules EngineRules Engine

InternalInternalAll stakeholders All stakeholders are internal to the are internal to the forestforestInformation wall Information wall Content Content restrictionsrestrictions

ExternalExternalAt least one of the At least one of the senders and/or senders and/or recipients is recipients is outside the forestoutside the forestContent Content restrictionsrestrictions

Global ConfigurationGlobal ConfigurationBoth internal and Both internal and externalexternalRouting / priority Routing / priority decisionsdecisions

E2K3 RG 2

Backbone

AD Site 3

Ex 2007Mailbox I Ex 2007

Mailbox F

Ex 2007 Hub Transport

AD

AD Site 4

Ex 2007 Mailbox C

Ex 2007 Mailbox D

Ex 2007 Hub Transport AD

Ex 2007 Hub Transport

Ex 2007 Mailbox E

AD Site 0

AD Site 2

AD Site 1AD Site 8

AD Site 6

AD Site 9

AD Site 10

AD Site 5

Ex 2007 Mailbox A

Ex 2007 Mailbox B

Ex 2007 Hub Transport AD

South America

North America

Europe

E2K3 RG 1

E2K3 MBX and Gateway

Server

E2K3 X.400Server

AD

Ex 2007 Edge

Transport

AD Site 7

AD

Internet

Ex 2007 Mailbox G

Ex 2007Hub

Transport

E2K3 MBX Server

ADAD

AD

AD

AD

AD

Cheaper to ManageCheaper to ManageManaging Mailflow RestrictionsManaging Mailflow Restrictions

InteroperabilityInteroperabilityExchange 2003 and Foreign GatewaysExchange 2003 and Foreign Gateways

Exchange 2003 Routing Groups and Exchange 2003 Routing Groups and Connectors supportedConnectors supported

SMTPSMTPRouting Group ConnectorsRouting Group Connectors

Exchange 2007 as the Routing backboneExchange 2007 as the Routing backboneExchange 2003 Routing Groups and Exchange Exchange 2003 Routing Groups and Exchange 2007 Branch Offices route through Exchange 2007 2007 Branch Offices route through Exchange 2007 backbonebackboneExchange 2003 never in the Exchange 2007 Exchange 2003 never in the Exchange 2007 backbonebackboneExchange 2007 servers never use Exchange 2003 Exchange 2007 servers never use Exchange 2003 servers as a mail routing backboneservers as a mail routing backbone

Foreign GatewaysForeign GatewaysGDK/EDK via Exchange 2003GDK/EDK via Exchange 2003Foreign Connector Gateways in Exchange 2007Foreign Connector Gateways in Exchange 2007

Exchange 2007 Coexistence with Exchange 2007 Coexistence with Exchange 2000 and Exchange Exchange 2000 and Exchange 20032003

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost = 100

Cost =

100

Cost = 100

Site 1 Site 2

Site 3Site 11

Site 12

Site 13

Site 21

Site 22

Site 23

Exchange Routing Group (DWBGZMFD01QNBJR)

RG13 RG1 RG2 RG23

RGCCost=10

RGCCost=10

RGCCost=10

E2K7

E2K7

E2K7

RGCCost=10

RGCCost=10

RGCCost=10

RGCCost=10

Originator

Recipient #1

Disable Link State on all E2K/E2K3 Servers

E2K7

E2K7

E2K7

E2K7

E2K7

E2K7

E2K7 E2K7

E2K7

E2K7

Recipient #2

Bifurcate

Disable the Ability of Links to Disable the Ability of Links to Marked as Up or DownMarked as Up or Down

SuppressStateChanges SuppressStateChanges REG_DWORD = 0 or REG_DWORD = 0 or non-zeronon-zero

0 = Normal operation 0 = Normal operation [Default][Default]

non-zero = Suppress non-zero = Suppress link state changeslink state changes

If set to non-zero, this registry setting will If set to non-zero, this registry setting will suppress all minor link state changes on this suppress all minor link state changes on this server. This property will prevent up/down status server. This property will prevent up/down status from being propagated. from being propagated.

Open a registry editor, such as Regedit.exe or Open a registry editor, such as Regedit.exe or Regedt32.exe;Regedt32.exe;Navigate to Navigate to HKLM\System\CurrentControlSet\Services\RESvc\HKLM\System\CurrentControlSet\Services\RESvc\Parameters;Parameters;Right-click Parameters and select New | DWORD value. Right-click Parameters and select New | DWORD value. Name the new DWORD value Name the new DWORD value SuppressStateChanges;SuppressStateChanges;Double-click Double-click SuppressStateChanges;SuppressStateChanges;In the In the Value dataValue data field, enter field, enter 11;;Close the registry editor and then restart the Simple Mail Close the registry editor and then restart the Simple Mail Transfer Protocol (SMTP), the Microsoft Exchange Routing Transfer Protocol (SMTP), the Microsoft Exchange Routing Engine, and the Microsoft Exchange MTA Stacks services Engine, and the Microsoft Exchange MTA Stacks services for the change to take effect. for the change to take effect.

European AD Site

Europe RG

Server BExchange 2003

North American AD Site

Northamerica RG

Server AExchange 2003

Migrating to Exchange 2007Migrating to Exchange 2007

Exchange 2007 RG

Server CExchange 2007Hub Transport

2 2

Server CExchange 2007

Mailbox

Server DExchange 2007Hub Transport

206

2 2

ServersServers BB CC DD

AA

CostCost 1.01.0 2.02.0 2.202.2066

RoutRoutee

A-BA-B A-CA-C A-C-A-C-DD

BB

CostCost 2.202.2066

2.02.0

RoutRoutee

B-D-B-D-CC

B-DB-D

CC

CostCost 0.200.2066

RoutRoutee

C-DC-D

Start: Exchange 2003 onlyStart: Exchange 2003 onlyIntroduce the North America Exchange Introduce the North America Exchange 2007 Hub Transport servers. Creates the 2007 Hub Transport servers. Creates the Exchange 2007 RG that spans all AD Sites.Exchange 2007 RG that spans all AD Sites.

Add the North America Exchange 2007 Add the North America Exchange 2007 Mailbox ServersMailbox ServersAdd the North American RG / Exchange Add the North American RG / Exchange 2007 RG Routing Group Connectors:2007 RG Routing Group Connectors:

Use the new-RoutingGroupConnector taskUse the new-RoutingGroupConnector task

Add the Europe Hub Transport serversAdd the Europe Hub Transport serversThe North American Hub and European Hub The North American Hub and European Hub Transport servers will use existing IP Site Links;Transport servers will use existing IP Site Links;

The existing IP Site Link Cost is used.The existing IP Site Link Cost is used.

Add the European RG / Exchange 2007 Add the European RG / Exchange 2007 RG Routing Group ConnectorsRG Routing Group ConnectorsThe Exchange 2007 Routing Engine knows The Exchange 2007 Routing Engine knows about Exchange 200x RGC Costs and uses an about Exchange 200x RGC Costs and uses an Exchange 2007 preference modelExchange 2007 preference model

Exchange 2007 Costing Model: E2K3Cost.E2K7CostExchange 2007 Costing Model: E2K3Cost.E2K7Cost

Avoids Loops for deterministic routing tablesAvoids Loops for deterministic routing tables

11

Foreign Connectors on Exchange Foreign Connectors on Exchange 20072007Creating the installationCreating the installation

Add custom action to create the NonSMTPConnector in ADAdd custom action to create the NonSMTPConnector in AD

Create the drop folder with the correct permissionsCreate the drop folder with the correct permissions

Use .net FileSystemWatcher class to monitor Exchange drop folderUse .net FileSystemWatcher class to monitor Exchange drop folder

Receiving a message from Exchange:Receiving a message from Exchange:MIME data streams in dropped .eml filesMIME data streams in dropped .eml files

Unpack message data and access propertiesUnpack message data and access properties

Submitting a message to Exchange:Submitting a message to Exchange:Create envelope .eml file in pickup/replay directoryCreate envelope .eml file in pickup/replay directory

Build the list of the required MAPI propertiesBuild the list of the required MAPI properties

Managed Objects provided with Exchange 2007:Managed Objects provided with Exchange 2007:Native encapsulation and de-encapsulation of custom address Native encapsulation and de-encapsulation of custom address typestypes

Message body conversion routines (e.g. RTF to TEXT, HTML, etc.)Message body conversion routines (e.g. RTF to TEXT, HTML, etc.)

Add management UI using monad extension interfacesAdd management UI using monad extension interfaces

X.400 Bridgehead onX.400 Bridgehead onExchange 2007 (Boldon James)Exchange 2007 (Boldon James)

Experience:Experience:““Compared to developing EDK applications Compared to developing EDK applications this was a much simpler and this was a much simpler and cleanercleaner  solution, eliminating the complex solution, eliminating the complex legacy MAPI programming and data legacy MAPI programming and data structures required to implement structures required to implement equivalent functionality when developing equivalent functionality when developing against the 2003 platform.against the 2003 platform.””

““The development was surprisingly The development was surprisingly straightforward.straightforward.””

Added the analogous X.400 capability of Added the analogous X.400 capability of Exchange 2003 in a month with one Exchange 2003 in a month with one dev and one testdev and one test

ResourcesResourcesTechnical Chats and Webcastshttp://www.microsoft.com/communities/chats/default.mspx http://www.microsoft.com/usa/webcasts/default.asp

Microsoft Learning and Certificationhttp://www.microsoft.com/learning/default.mspx

MSDN & TechNet http://microsoft.com/msdnhttp://microsoft.com/technet

Virtual Labshttp://www.microsoft.com/technet/traincert/virtuallab/rms.mspx

Newsgroupshttp://communities2.microsoft.com/communities/newsgroups/en-us/default.aspx

Technical Community Siteshttp://www.microsoft.com/communities/default.mspx

User Groupshttp://www.microsoft.com/communities/usergroups/default.mspx

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