The Big OneStrategies for AD &

Exchange Migrations after a Company Merger

Eric B. RuxContributing Editor, Windows IT Pro

Eric B. Rux

Windows Home Server

Free Prizes!

Overview

• Why is this important to you?• Planning is the key• Easy Wins• AD Migration• Exchange Migration• Questions

Why is this important to you?

?

Planning is the key

Some things to think about:

• Training / Time to practice migrations• Scheduled outages• Company cultural differences• Network Connectivity• Network differences between the two sites• Network/Active Directory/Exchange

“anomalies” • Customer communication• Employee communication• Licensing

Easy Wins

One Company; One Email

Recipient Policy

One Company; One Email

Free/Busy

InterOrg Replication Tool

Trusts

Trusts (Cont)

Other Easy Wins?

AD Migration Tools

Two Strategies

•All at once

• Staged Migration

Staged??? (next slide)

Staged?

What user attribute in AD will help us perform the migration is stages?

SID History to the Rescue

SID History in AD (ADSI Edit)

Preparation

• The next few slides show what needs to be in place before you can attempt to use ADMT.

Name Resolution between domains

DNS settingsServer Client

Configure Forest Trusts

(if you haven’t already)

Password migration options

Setup the Password Export Service

Disable SID Filtering

netdom trust old /domain:new /quarantine:No /UserD:Administrator /passwordD:P@ssword

• If SID filtering has been disabled properly, you will

receive a message similar to this one:

Setting the trust to not filter SIDs.The command completed successfully.

Create a Migration Server

Member of New.localLog on to New.local

Set Permissions

Prepare the computers

Firewall GPO

Prepare the Computers (cont)

Native Mode!

After all of that….

…..now you’re ready

DEMO

Exchange Migration

Queue Method

(Companies with few users/small IS)• Disable email forwarding and let the email

queue up on the gateway• Copy the mailboxes from the old Exchange

server to the new Organization• Enable email forwarding and let email flow to

the new email server

Prep Method

• Copy the mailboxes from the old Exchange server to the new Organization. Use a date range and only copy email from today. This step creates a mailbox in the destination email server, and configures the user account for email.

• Point the email gateway to the new server. Internet email will now flow to the new server.

• Run a second email migration, and this time, do not specify a date range. This will bring the remaining email messages over to the new server

Public Folders

SMTP HELL

proxyAddresses=smtp: ITCalendar.new.com

LookOut!

• exprofre.exe /targetgc=NEWDC1 /v /n /logfile=c:\UpdateProfile.log

Plan Your Dive, Dive Your Plan

Questions?

Eric B. Rux, MVPebrux@whshelp.com