Exchange 2003 decommission steps

Hello,
Are these the right steps to decommission exchange 2003?
Task Name
Create new SMTP connector
Create new send connector
Move Public folders
Exchange OAB
Remove mailbox Database
Routing group connectors
Recipient policy's
Kind Regards,
PenDraKon

1. Please make sure that all the clients have connected to the new Exchange server at least once. - What do you mean?
2. Ensure that mail flow in your Exchange server doesn't depend on services that are running on legacy Exchange server. How do I check this please?
1. I believe this is referencing to ensure all your end user clients are pointing to the Exchange 2007/2010 CAS. I would assume this has already happened if you already moved all your mailboxes to off of the Exchange 2003 servers. Unless you
have end users complaining they cannot access their email, they should be accessing migrated mailboxes through the newer CAS roles installed.
2. Ensure that you don't have any internal relays, such as for network devices or internal alerting systems, that require Exchange 2003 to receive SMTP. You may have to configure additional receive connectors scoped to specific purposes to allow
internal applications or devices to send email (non-Outlook clients). Also, Are there any other services, such as message hygiene applications that accept inbound messages first the forward into Exchange that reside on those Exchange 2003 servers?
As long as inbound email is being routed through Exchange 2007/2010 and outbound email is being sent through the HT roles directly using DNS routing or a specific smarthost that is not on your Exchange 2003 servers, you should be good.

Similar Messages

Need detail information, steps would be nicer, to upgrade from Exchange 2003 to Exchange 2010 to setup in test system first then try on production, since not much room for downtime, thanks bekir

Need detail information, steps would be nicer, to upgrade from Exchange 2003 to Exchange 2010 to setup in test system first then try on production, since not much room for downtime, thanks bekir

Hi,
Overview of the upgrade progress from Exchange 2003 to Exchange 2010 including the following steps:
Installing Exchange 2010 within your organization on new hardware.
Configuring Exchange 2010 Client Access.
Creating a set of legacy host names and associating those host names with your Exchange 2003 infrastructure.
Obtaining a digital certificate with the names you'll be using during the coexistence period and installing it on your Exchange 2010 Client Access server.
Associating the host name you currently use for your Exchange 2003 infrastructure with your newly installed Exchange 2010 infrastructure.
Moving mailboxes from Exchange 2003 to Exchange 2010.
Decommissioning your Exchange 2003 infrastructure.
For more details, please refer to this following document.
http://technet.microsoft.com/en-us/library/ff805040(v=exchg.141).aspx
Best Regards.

Office 365 Deployment w/Decommissioned Exchange 2003 environment

Hello,
I'm having an issue creating Office365 mailboxes. Here's my situation:
In 2011 we we migrated off of an on-premise Exhange 2003 server and on to Google Apps (Gmail). To my knowledge the on-premise Exchange 2003 server was fully decommissioned and removed from our network. Now we're try to move from Google Apps (Gmail)
to Office365. I've set up AD synchronization and all my AD accounts synchronize as expected. However, only some of my synchronized accounts are provisioning mailboxes correctly. After some troubleshooting on the Office365 community we were
able to narrow down the issue: http://community.office365.com/en-us/f/156/t/252194.aspx. It appears that the only accounts that are successully provisioning mailboxes are accounts that DID NOT previously have a mailbox associated on the on-premise
Exchange 2003 server...Accounts that DID hold a mailbox on the on-premise Exchange 2003 server are NOT being successfully provisioned with an Office365 mailbox. My understanding is that this is actually expected functionality...Per MS support techs:
If an AD account has attributes indicating an on-premise Exchange server, then Office365 will not provision a mailbox until the on-premise mailbox is migrated. The issue I have is, I do not have an on-premise mailbox to migrate or an on-premise Exchange
server at all.
My on-premise Exchange 2003 server no longer exists. What attributes do I need to remove and/or reset on my accounts for Office365 to be able to provision a mailbox correctly?
Thank you in advance!

Hi,
What’s the error message do you receive when trying to create the mailbox?
You can check the user’s AD properties by:
ldifde -f c:\<Name of User>.txt -d "distinguishedName of User"
Here is the detailed steps for getting the
distinguishedName of a user:
a. Run the Adsiedit.msc from a command prompt.
b. Expand “Domain”->”DC=domainName,DC=com”->”CN=Users”
c. Right click on ”CN=the problematic user name”, click “Properties”.
d. Find the attribute “distinguishedName” attribute. Double click copy the value of it.
Thanks,
Simon Wu
TechNet Community Support

Exchange 2003 to Exchange 2010 migration steps

HI ,
I have migrated windows 2003 to windows 2008.Its successfully migrated.
Second phase i have a plan to migrate exchange 2003 to exchange 2010.
My current setup
windows 2008 64bit (DC)
exchange 2003 sp2
1
Bring the Exchange organization to Exchange Native Mode.
2
Upgrade all Exchange Servers to Exchange Server 2003 Service Pack 2.
3
Bring the AD forest and domains to Windows Server 2003 Functional (or higher) levels.
4
Upgrade at least one Global Catalog domain controller in each AD site that will house Exchange Server
to Windows Server 2003 SP2 or greater.
5
Prepare a Windows Server 2008 (RTM or R2) x64 edition server for the first Exchange 2010 server.
6
Install the AD LDIFDE tools on the new Exchange 2010 server (to upgrade the schema).
7
Install any necessary prerequisites (WWW for CAS server role).
8
Run setup on the Exchange 2010 server, upgrade the schema, and prepare the forest and domains. (Setup runs all in one step or separate
at the command line.)
9
Install CAS server role servers and configure per 2010 design. Validate functionality.
10
Transfer OWA, ActiveSync, and Outlook Anywhere traffic to new CAS servers.
11
Install Hub Transport role and configure per 2010 design.
12
Transfer inbound and outbound mail traffic to the HT servers.
13
Install mailbox servers and configure Databases (DAG if needed).
14
Create public folder replicas on Exchange 2010 servers using pfmigrate.wsf script, AddReplicaToPFRecursive.ps1, or Exchange 2010
Public Folder tool.
15
Move mailboxes to Exchange Server 2010 using Move Mailbox Wizard or Power Shell.
16
Rehome the Offline Address Book (OAB) generation server to Exchange Server 2010.
17
1Rehome the public folder hierarchy on the new Exchange Server 2010 admin group.
18
Transfer all Public Folder Replicas to Exchange Server 2010 Public folder store(s).
19
Delete Public and Private Information Stores from Exchange 2003 server(s).
20
Delete Routing Group Connectors to Exchange Server 2003.
21
Delete Recipient Update Service agreements using ADS Edit.
22
Uninstall all Exchange 2003 servers.
This is my plan to migrate.But i have a doubt in installing exchange 2010 in this scenario.
Is it necessary to use
Setup.com /PrepareLegacyExchangePermissions,
Please help me what excactly i have to do

I think that <a href="http://www.micronobal.com/blog/2014/5/1/exchange-server-migration-to-the-cloud-ensure-a-seamless-transition" title="Exchange Server Migrations">Exchange Server
Migration</a> is a very delicate project and to be taken very seriously as it is a detailed work as well. You are giving us some great tips.
Some Articles I would like to share as well:
<a href="http://www.micronobal.com/blog/2014/5/1/exchange-server-migration-to-the-cloud-ensure-a-seamless-transition" title="Exchange Server Migration to the Cloud - Seamless Transition.">
Exchange Server Migration to the Cloud</a>
It takes a lot of time and effort to get it right. Thank you for helping
Here some information about services for migrations
<a href="http://www.micronobal.com/business/cloud/advancedtechnologyservices" title="Migrate your email to the cloud.">Business Email migration</a>

Exchange 2010 System Public Folders trying to replicate to decommissioned Exchange 2003

I was checking the mail queue on Exchange 2010 and noticed several hundred messages in retry. Looking at the messages I found that they were all destined for an old 2003 exchange that has been decommissioned. I looked at the System Public Folders and found
replication is set up on "events root, OWAScatchpad, SchemaRoot, and Store Events. They are set to replicate to the old mail server. When I try to remove the old server from replication it gives me an error;
Microsoft Exchange Error
The following error(s) occurred while saving changes:
Set-PublicFolder
Failed
Error:
You must specify a value with the Replicas parameter.
OK
Not sure where to go with this error. Could someone point me in the right direction?
Thank you,
Wade Harris

Hi,
For this issue, I recommend you add an Exchange 2010 public folder database to the replica list and then remove Exchange 2003 server from this list to check result.
I tested in my lab, and I got the same error with yours, we need to keep at least one public folder database in the replica list.
Best regards,
Belinda
Belinda Ma
TechNet Community Support

Migrate windows 2003r2 AD to windows 2012r2 AD and exchange 2003 to exchange 2013 Steps

Hi
requesting advice,
how can i migrate windows 2003 ad + windows 2003 exchange to windows 2012r2 AD+ exchange 2013 DAG (planing to implement 2 mail box and 2 hub+cas hyper-v vm servers )
kindly guide me how can i migrate and what is the best practice method
requesting step by step procedures to follow
Regards
Ratheesh
Ratheesh

Hi Ratheesh,
Migrating AD from Windows Server 2003 domain to Windows Server 2012 R2 domain:
Introducing the first Windows Server 2012 Domain Controller (Part 1 of 2)
http://blogs.technet.com/b/askpfeplat/archive/2012/09/03/introducing-the-first-windows-server-2012-domain-controller.aspx
Step-By-Step: Active Directory Migration from Windows Server 2003 to Windows Server 2012 R2
http://blogs.technet.com/b/canitpro/archive/2013/05/27/step-by-step-active-directory-migration-from-windows-server-2003-to-windows-server-2012.aspx
Since we cannot migrate Exchange 2003 to 2013 directly, you can either migrate to Exchange 2007 or Exchange 2010 then to Exchange 2013.
Checklist: Upgrading from Exchange 2003 and Exchange 2007
http://technet.microsoft.com/en-us/library/ff805038(v=exchg.141).aspx
Checklist: Upgrading from Exchange 2003
http://technet.microsoft.com/en-us/library/ee332309(v=exchg.141).aspx
Part 1: Step-by-Step Exchange 2007 to 2013 Migration
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx
Checklist: Upgrade from Exchange 2010
http://technet.microsoft.com/en-us/library/ee332309(v=exchg.150).aspx
I hope this helps.
Amy

Decommissioning Exchange 2003 Server

Follow the Exchange Deployment Assistant to the letter and you will not have issues.
http://technet.microsoft.com/en-ca/exdeploy2013/Checklist.aspx
(after the migration it shows you how to decommission it properly.)

Hello All,
My Exchange server setup is in coexistence mode (1 Exchange 2003 server entp and 2 Exchange Severs 2010 DAG is in place)
only 2 mailboxes are left on Exchange 2003 and will be moving them soon.
So I wish to know the what all precautions I should be take and what all action items are there.Recommended link will do
regards
Atul A
This topic first appeared in the Spiceworks Community

Decommissioning Exchange 2003 after Office 365 Migration

Hello,
My company recently migrated from Exchange 2003 to Office 365 and are working on decommissioning our on-premises Exchange 2003 server. We believe everything is ready to go, however this Microsoft article: http://help.outlook.com/en-us/140/ff959224.aspx#nextsteps has
a big Caution box warning of "unintended consequences" and recommending I contact Microsoft Support:
I've tried my Office 365 support options, but they only tell me that Exchange 2003 is no longer supported and they can't help me, despite the fact that I'm trying to remove it, not maintain it. So
I'm allowed to pay for a new service, but shouldn't expect assistance in safely moving from my old service...
Regardless, they directed me here, so I was hoping someone might be able to advise about what these "unintended consequences" actually are so I can feel fully prepared to decommission.
Thanks in Advance,
Jim

Hi,
After you’ve verified that all e-mail is being routed directly to the cloud-based mailboxes, completed the migration, and no longer need to maintain your on-premises e-mail organization or don’t plan on implementing a single sign-on solution, you can uninstall
Exchange from your servers and remove your on-premises Exchange organization. For more information, see the following:
How to Uninstall Exchange Server 2003
http://technet.microsoft.com/en-us/library/bb125110(EXCHG.65).aspx
Best regards,
Belinda
Belinda Ma
TechNet Community Support

Migration; Exchange 2003 SP2 to Exchange 2013 on new Domain and DC

I wasn't prepared for this task, and it was thrown at me to do... Eyes are bleeding from planning reading and planning, would LOVE any input from you guys. First time posting, here and have heard great things about these forums. The Company
I work for obtained a new client and a network that is in a cluster at the moment, so I'm having to dig through everything and restructure..
Scenario:
Old Domain/Server: (To be decommissioned)
Server 2003 Standard SP2 (Domain: cosco.com; NETBIOS name: coscoex)
Exchange 2003 SP2 (6.5.7638.1)
Server is a domain controller and exchange server.
Migrating to:
Server 2012 R2 Datacenter (New Domain ad.cosco.com; NETBIOS name: cosco)
VM #1: Server 2012 R2 Domain Controller at 2012 R2 Functionality
VM #2: Server 2012 R2 with Exchange 2013 Standard (Not Yet Installed) Joined to ad.cosco.com domain
VM #3: Server 2012 R2 with Exchange 2010 (Not Yet Installed) joined to ad.cosco.com domain
These are probably not ideal conditions, but I have to work with what I'm given.
Host server (2012 R2) is in work group mode. Hyper V Installed with a VM of Server 2012 R2 and as a DC at a functionality level of Server 2012 R2. I had intended starting at a lower functionality level and raising
it later, but.... ya I forgot to change it. If needed I can spool up a new DC with a lower functional level.
DNS, AD and group policy is all jacked up on the 2003 DC so that doesn't matter, All user accounts are going to be created under the new domain. The concern is migrating the mailboxes from Exchange 2003 on the old domain to
Exchange 2013 on the new domain. The client is going to provide CSV of the AD accounts that are still valid (a lot of accounts are no longer used or are from people that no longer with the organization.)
I had some ideas, but I'm not sure if they will work. This is something I have never done before (Senior Engineer Quit).
My thoughts:
- Establish a two way trust relationship between the two domains.
- Create two VM's, one with Exchange 2010 and one with Exchange 2013 (They have a 2010 licence that was not used).
- Create the users on the new domain
- Use the double hop method from Exchange 2003 > Exchange 2010 > Exchange 2013
- Link Exchange accounts to the correct user accounts on the new DC.
Can this be done cleanly? Am I going about this the correct way? Any feedback would be GREATLY appreciated.
Note: We are forced to use ad.cosco.com (Obviously not the actual domain name)

Hi,
Base on my experience, your idea is feasible.
However, before getting started, you should note that Exchange 2010 (with any service pack or update rollups) is not (yet) supported to install on Windows 2012 R2. More details refer to the following link:
http://technet.microsoft.com/library/ff728623(v=exchg.150).aspx
After all the preparations complete, you can refer to the following articles to migration exchange 2003 to 2010, then to 2013:
Exchange 2003 to 2010 Cross-Forest Migration Step by Step Guide
Exchange 2010/2007 to 2013 Migration and Co-existence Guide
Best regards,
Niko Cheng
TechNet Community Support

Exchange 2007 setup, transitioning from Exchange 2003

Hello Exchange Experts,
I just setup a Exchange 2007 within our domain, transistioning from Exchange 2003, question: When I added the mailbox role on the setup of Exchange 2007, the mailboxes appeared instantly from our Exchange 2003..the connector I'm assuming automatically connected
during the 07 setup. Is this normal? I was under the assumption to migrate mailboxes from 03 to 07 Exchange, the wizard must be ran. All active mailboxes from 03 appear. I attempted to migrate one mailbox using the wizard, error after the wizard completed,
mailbox exists. Makes sense, just not understanding how the mailboxes flowed/migrated automatically without running the migration steps. Would someone explain? You could say, this migration is very new to me.
Thanks in advance!
James

Ronny, our company had an existing license for 2007. Of courser 2010 or 2013 would have been a better transition, but 2007 is it. The server 2007 has met all the criteria for the transition, spent last moth prepping everything on 2003 and 2007. I'm just
not understanding why the mailboxes appeared upon 2007 immediately after adding the mailbox role. The management console on 07 shows the mailboxes reside on 03 exchange server. I did not go through the process/wizard to move to 07. Perhaps because
during the installation of Exchange 07 created the connector from 2003? Maybe that's my question.
Mail flow is very responsive now, just wondering for the reasons of decommissioning exchange 2003 at a later date. Exchange 2003 is functioning now as a bridgehead, working perfectly now.
Thanks for your input.
James
Thanks Ronnie for your input! Issue resolved

Removing the last Exchange 2003 server from an Exchange 2010 organization

We're in the process of decommissioning our last Exchange 2003 server, I have proceeded through the steps in the Microsoft guide on how to do this and have deleted both the Mailbox and Public Folder stores, removed the RUS policies for Domain and Enterprise.
All mailboxes and public folders are now homed on the new Exchange so nothing resides on the old Exchange 2003 server.
I have today inserted the Exchange 2003 media into the Exch 2003 server and chosen the remove action, but it keeps telling me;
'The component "Microsoft Exchange Messaging and Collaboration Services" cannot be assigned the action "Remove" because: - One or more users currently use a mailbox store on this server.
I checked the server by searching ADUC and also checked this KB article http://support.microsoft.com/kb/279202 and nothing shows up.
I also checked this article on someones blog but no such luck http://smtp25.blogspot.co.uk/2007/04/having-trouble-to-uninstall-exchange.html
However someone made a comment that the used an ADSIedit query (&(objectCategory=user)(msExchHomeServerName=*)) however I am unsure how to do this in ADSI.
Any advice would be gratefully received.
Thanks!

Fantastic post ... thank you so much!
I found three active directory users account using that search which never had a mailbox assigned to them. I removed the exchange attributes from each account and the uninstall proceeded
flawlessly!

Cannot Move Mailbox from Exchange 2003 to Exchange 2007

Hello,
I am migrating exchange 2003 to Exchange 2007 and have moved almost all the mailboxes without any issue, but there are some mailboxes which are not being moved since they are giving me the below error.
Error:
Error was found for John Doe ([email protected]) because: Error occurred in the step: Opening source mailbox. Failed to open mailbox with error: ClassFactory cannot supply requested class, error code: -1056749262
Initially I found that the account was disabled from Active
Directory so enabled it but and also replicated the active Directory but still the problem is there, its not hidden in the GAL aswell.
http://www.arabitpro.com

Thanks everybody .. I have solved the problem myself.
To resolve this issue I had to give the account "SELF" permissions for "Associated external account". If the user does not have these
permissions to its own account it is unable to set the msExchMasterAccountSID attribute for the disabled account causing the error. By setting this permission on the disabled account, it allows it to mark the msExchMasterAccountSID attribute.
To do this follow this procedure:
1. In the Active Directory Users and Computers snap-in, on the View menu, click Advanced Features.
2. In the Exchange Advanced properties of the disabled user object that owns the mailbox, click Mailbox Rights, and then search the list of accounts for one
that has the Associated External Account permission.
4. If no account has this permission, grant the SELF account Associated External Account and Full Mailbox Access permissions.
https://support.microsoft.com/kb/278966?wa=wsignin1.0
http://www.arabitpro.com

Exchange 2003 Permissions Error when attempting to forward emails

Server 2003 R2 (fully patched as of 11/2013) running Exchange 2003 SP2 (Built 7638.x2) on ESXi 4.1; WinXP clients and Server 2003 Terminal Servers running Outlook 2003; Domain and Forest are running at 2008 Functional Levels.
Occasionally, some users are receiving this error message: "You do not have sufficient permission to perform this operation on this object. See the folder contact or your system administrator" intermittently when attempting
to 1) forward email both to and from senders/recipients inside and outside the domain, 2) When attempting to modify the subject of a previously received email (I didn't know you could do that), 3) When attempting to open received attachments.
There is no discernible pattern to the users or the original senders of the emails.
Most of the results I've found when searching relate to NTFS permissions or a ReadOnly propery on items in the users's profile folder, or sending on behalf of another user - these either do not apply or have been verified as not the cause.
During the initial rash of problems when there was a problem with an attachment and we absolutely needed it, I was able to connect to OWA using a special administrative account with access to the mailbox, open the attachment and log out. Once I had
done so with this account, the end user was able to open the attachment on their own without a warning.
Changes made to the environment prior to this issue that may be related (nobody remembers when exactly this started, so I can't state that it definitively happened after this change):
All servers were virtualized on ESXi 4.1 in late 2011; subsequently converted and migrated to Hyper-V Server 2012 in early 2013 (with the exception of the Exchange and SQL servers).
All 2003/R2 domain controllers demoted and removed; DFL/FFL raised to 2008; SYSVOL replication was migrated from FRS to DFS-R.
Troubleshooting steps:
Exchange server and affected client computers have been restarted several times; the various exchange services have been restarted; permissions on the mailboxes and AD objects have been verified; event logs are generally clean with the exception of ActiveSync
errors for a single user not currently affected by forwarding emails, there are no other errors reported.
Per recommendations on another forum, I had enabled several diagnostic logs in the diagnostic logging tab of the server. Unfortunately not much was found in the Application log even after filtering out the basics. There were occasional errors
referencing User A failed to modify an item in User B's mailbox because access was denied; however, I was unable to correlate these errors to any reported incidence of the above message.
I created a new mailbox database on the same server and migrated all the mailboxes to the new database, there was no change; users immediately began seeing these errors.
Over a holiday weekend, I then spun up a new Win 2003 R2 server, with a fresh installation of Server 2003 R2 (also fully patched through 11/2013) running the same version of Exchange 2003 SP2 this time running as a virtual guest on Hyper-V Server 2012.
I migrated all mailboxes from the original mail server to the new mail server and it appeared that the problem was remedied; however, it has slowly started up again and is starting to become more frequent.
I'm really at my wits end with this problem and would like to get it resolved before we purchase and install our new Exchange Server later this year.

Updates
Users have reported that they can forward the email from OWA; even after doing so, they are unable to forward from Outlook. So either my previous notes on the issue were wrong, or this is just more of the "intermittent" nature of the problem.
I will have to investigate what logging options are available to me at the Outlook client level - any thoughts on that subject are also welcome.
Users have now reported that a previous (rarely used) workaround (the administrative account opening the email in OWA) no longer enables them to view attachments or forward emails in Outlook.
I'm still adjusting the various diagnostic logging settings to see if I can spot an event which corresponds to a reported occurrence. The most unusual warning reported is the following:
Source:MSExchangeIS Mailbox Store
Category: Access Control
Event ID: 1029
[email protected] failed an operation because the user did not have the following access rights:
'Delete' 'Read Property' 'Write Property' 'Create Message' 'View Item' 'Create Subfolder' 'Write Security Descriptor' 'Write Owner' 'Read Security Descriptor' 'Contact'
The distinguished name of the owning mailbox is /O=DOMAIN/OU=FIRST ADMINISTRATIVE GROUP/CN=RECIPIENTS/CN=USER_B. The folder ID is in the data section of this event.
However odd these occasional warnings are, they do not appears to correlate to the reported permissions issue. Everytime I've seen one of these events, I've inquired with "user_A" to see if they've recently seen the popup and in each case they have
not.

Outlook 2013 won't start with Exchange 2003 on the network

Hello All,
I have outlined my problem below, If someone could please help me that would be great!
Environment
==========
SBS 2003 Server Running AD and Exchange 2003
Clients are Windows 7 with Office 2013 and Outlook 2007 (to connect to existing 2003 Server)
Issue
=====
I am in the process of Migrating off of SBS 2003 to Office 365. The situation is that my customer needs to keep the SBS 2003 server until end of life where they will at that time determine a upgrade path. They however do not want to use Exchange
anymore. I have migrated their mailboxes successfully to Office 365.
The problem that I am running into is with Outlook 2013. Because Exchange 2003 server still exists in the network I am unable to launch Outlook 2013. I get a Message
"The Resource that you are trying to use is located on an unsupported version of Microsoft Exchange Contact your e-mail administrator for assistance"
I have tried to create a new Outlook profile. However since the exchange server exists still it auto discovers the server for the account.
Questions
========
1. What is the best workaround for this situation? My customer still needs to keep their SBS sever for their domain and plans on retiring the server before Server 2003 End of Life this coming server. (Upgrade is not an option, nor is getting
rid of the Domain, they are a small company).
2. If I disabled the Exchange services on the server would this work? Would outlook 2013 not detect Exchange
2003 on the network?
Basically I need to force Outlook 2013 to look at Office 365.
3. Configuring Outlook 2013 to manually connect to Office 365? The problem here is that how do I locate the server name for the manually connection? I have found some blogs that say to use Remote Connectivity Analyzer https://testconnectivity.microsoft.com/
but I cant seem to get that to work.
Any ideas?
Thanks!

Hi,
Please refer to the following article to check your migration steps from Exchange 2003 to Office 365:
http://blogs.technet.com/b/canitpro/archive/2013/05/31/step-by-step-migration-of-exchange-2003-server-to-office-365.aspx
If all mailboxes are moved to Office 365, Outlook 2013 would use Autodiscover service to connect to your Office 365. Please make sure your Autodiscover service is configured correctly in Office 365. Also
verify that all the DNS records and Public Folder are updated and pointed towards Office 365 services. If there is any question about migration to Office 365,
we can ask a question in Exchange Online forum for more suggestion:
https://social.technet.microsoft.com/Forums/msonline/en-US/home?forum=onlineservicesexchange
Regards,
Winnie Liang
TechNet Community Support

Exchange 2003 - 2010. Moving public folders one at a time

Hi all,
I'm in the process of decomisioning our old Exchange 2003 server (long overdue after what has been a relativly smooth and trouble free transition to 2010). As the first step in the decomisioning process, I'm looking to move the public folders from the 2003
box to the 2010 box. From my understanding there are a couple of ways to achieve this (please correct me if I'm wrong). The first is to add the Exchange 2010 server as a new replication partner, allow for replication of the PFs to occur, and then remove the
2003 partner from the replication partnership. The other option is to use MoveAllReplicas.ps1.
I opted for the first option, but the problem I have is that the initial replication process started to generate a very large number of transaction logs on the Exchange 2010 server, to the point I was slightly conccerned I was going to run out of space on
the volume (our server is backed up nightly at which point the transaction logs are normally flushed).Whilst I know I could potentially increase the size of the volume or turn on cicular logging for the duration of the migration (neither of which is appealing
as it will involve down time), I was wondering if there was a way to move a smaller set of Public folders one at a time with a powershell command, or is it an all or nothing operation? My other option may be to replicate a small subset of folders everyday,
but that just a little painful as there are a large number of child folders with in the structure. Any other suggestions welcome!
Many thanks,
Rob

Hi,
If your Public Folder Database is large, you can use tool like Exfolders or ESM to add replica folder by folder.
A related article for your reference.
http://careexchange.in/moving-public-folders-from-exchange-2003-to-exchange-2010/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or
suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
And it is recommended to replicate public folders off business hours.
Best regards,
Belinda Ma
TechNet Community Support

Exchange 2003 decommission steps

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