Cannot uninstall Exchange 2007

When I try to uninstall Exchange 2007 I get the following error under the Mailbox Role.
The virtual directory 'ExchWeb' already exists under 'server.domain.com/Default Web Site' Parameter Name: VirtualDirectoryName.
I actually tried removing the ExchWeb virtual directory on the Exchange 07 server but that didn't help. I haven't been able to find anything else on the internet regarding this issue.
Vincent Sprague

Hi,
From error "Exchange server "server" was not found. Please make sure you have typed it in correctly", I recommend you check if the Exchange 2007 server is under the CN=Servers container in ADSIEDIT.
If it is there, based on the situation, you couldn't uninstall Exchange 2007 Mailbox role via Add/Remove Programs or using Setup.com /mode:uninstall /role:<server roles to remove> command. The last resort is to uninstall Exchange 2007 Mailbox role
using ADSIEDIT, the method using ADSIEDIT should be only be used carefully.
If it isn't there, maybe the suggestion mentioned in the following thread can help you.
Unable to uninstall Exchange 2007 SP2 'Exchange server was not found.' - manual uninstall time?
http://social.technet.microsoft.com/Forums/exchange/en-US/fbea8afb-3d50-4ed1-b2f5-9bd28f648815/unable-to-uninstall-exchange-2007-sp2-exchange-server-was-not-found-manual-uninstall-time?forum=exchangesvrgenerallegacy
Here is an article about how to remove Exchange 2007 from a computer for your reference.
How to remove Exchange 2007 from a computer:
http://support.microsoft.com/kb/927464
Best regards,
Belinda
Belinda Ma
TechNet Community Support

Similar Messages

Uninstalling Exchange 2007 - Folder Replicas Error

I'm trying to remove Exchange 2007 which I was testing using our development system but have come across some errors during the uninstall process.
The error message I receive is something like this: Error: Uninstall cannot continue. Database "Public Folder Database": The public folder database "SERVER\Second Storage Group\Public Folder Database" contains folder replicas...
Now unfortunately i'm a) no exchange expert (i'm a .NET dev) and b) we dont use exchange for email - so I cant move folders to an alternative location.
All I want to do is remove the software without bringing the network down again (I didn't realise removing a mailbox from exchange 07 removed the user account as well!).
Thanks for your help,
Matt

Run the Get-PublicFolderStatistics cmdlet using the Exchange Management Shell and examine the output. If the folders listed are no longer required, you can remove them by piping the results of the Get-PublicFolderStatistics cmdlet into the Remove-PublicFolder
cmdlet:
Get-PublicFolderStatistics | Remove-PublicFolder
Once you've done this, re-run Get-PublicFolderStatistics and when no results are returned, you should find that this particular issue no longer prevents the uninstall of Exchange 2007.
I know this is an old post but I am at wits end....
This doesnt work for me, just get all of these errors
Regards Jake Gardner If you found this post helpful, please give it a "Helpful" vote. If it answered your question, remember to mark it as an "Answer". This posting is provided "AS IS" with no warranties
and confers no rights! Always test ANY suggestion in a test environment before implementing! Sorry if my grammar is incorrect as I am probably on writing to you from my phone.

Cannot uninstall Exchange 2013 - Cannot get ecp page too.

I am trying to install Exchange 2013 and we already have Exchange 2007 in our production environment.
Running the command get-exchangeserver |fl give the following. It shows IsCleintAccessServer : False, I am pretty sure I did select both the roles at the time of installation.
IsHubTransportServer            : True
IsClientAccessServer            : False
IsExchange2007OrLater           : True
IsEdgeServer                    : False
IsMailboxServer                 : True
IsE14OrLater                    : True
IsE15OrLater                    : True
IsProvisionedServer             : False
IsUnifiedMessagingServer        : True
IsFrontendTransportServer       : False
I can see all the virtual folders in IIS and while trying to access the ecp page using https://localhost:444/ecp?exchclientver=15, it says "Sorry! Access Denied".
Get-ecpvirtualdirectory gives no output.
If I try to uninstall I get the following error.
Error:
Uninstall can't continue. Database Mailbox Database 0424069483 : This mailbox database contains one or more mailboxes, mailbox plans, archive mailboxes, public folder mailboxes or arbitration mailboxes. To get a list of all mailboxes in this database, run the
command Get-Mailbox -Database <Database ID>. To get a list of all mailbox plans in this database, run the command Get-MailboxPlan. To get a list of archive mailboxes in this database, run the command Get-Mailbox -Database <Database ID> -Archive.
To get a list of all public folder mailboxes in this database, run the command Get-Mailbox -Database <Database ID> -PublicFolder. To get a list of all arbitration mailboxes in this database, run the command Get-Mailbox -Database <Database ID> -Arbitration.
To disable a non-arbitration mailbox so that you can delete the mailbox database, run the command Disable-Mailbox <Mailbox ID>. To disable an archive mailbox so you can delete the mailbox database, run the command Disable-Mailbox <Mailbox ID> -Archive.
To disable a public folder mailbox so that you can delete the mailbox database, run the command Disable-Mailbox <Mailbox ID> -PublicFolder. Arbitration mailboxes should be moved to another server; to do this, run the command New-MoveRequest <parameters>.
If this is the last server in the organization, run the command Disable-Mailbox <Mailbox ID> -Arbitration -DisableLastArbitrationMailboxAllowed to disable the arbitration mailbox. Mailbox plans should be moved to another server; to do this, run the command
Set-MailboxPlan <MailboxPlan ID> -Database <Database ID>. It was running the command 'Remove-MailboxDatabase 'CN=Mailbox Database 0424069483,CN=Databases,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=XYZ,CN=Microsoft
Exchange,CN=Services,CN=Configuration,DC=XYZ,DC=X,DC=X' -whatif'.
I would like to uninstall this server and do a fresh install. Tried recover option too, still facing same problem.
HELP!!!

Hi,
I suggest re-install CAS role for test whether it works.
If not, please uninstall the MBX role as what you want. I suggest make a full backup if there is any data in the Exchange server, then remove the mailbox database.
Found an article for your reference:
Cannot remove mailbox database
http://technet.microsoft.com/en-us/library/ms.exch.setupreadiness.unwillingtoremovemailboxdatabase(v=exchg.150).aspx
After uninstall the Exchange server, I suggest double check whether there is anything leave in AD via ADSIEdit tool. Then re-install Exchange server.
Thanks
Mavis
Mavis Huang
TechNet Community Support

Cannot Uninstall Exchange 2003 from former SBS2003 server

Hi,
I have this problem uninstalling Exchange 2003 from a prior SBS2003 installation.
Started with SBS2003 with Exchange2003 on server1
Then added server2, with Exchange2003 Standard
Then transitioned succesfully Server1 from SBS2003 to Server2003 Standard with Exchange2003 standard.
Now I have added 3 Exchange2010 servers and migrated completely to Exchange2010.
Uninstallation of Exchange2003 Standard from Server2 went succesfully.
I cannot find a way to uninstall the last Exchange2003 Standard from Server1
In Control Panel add remove programs there's no option to enter SBS setup anymore.
When starting setup.exe from SBS CD2 (i386 directory) I'm asked for a Product Key but I have no valid key to enter. Tried SBS key, Transition key, nothing works.
When downloading an Exchange2003 SP2 installation exe I only have the option to upgrade the existing installation. No option to uninstall.
What is the way forward? I'm stuck right now.
Regards,
Joost

Hello,
If you don't uninstall exchange 2003 in Control Panel add/remove programs, you may need to uninstall it by ADSIEDIT. Do not remove this Administrative Group unless you’re absolutely sure there’s
no object in Active Directory referencing this Administrative Group in the ExchangeLegacyDN attribute.
More information for your reference.
http://blog.dargel.at/2012/02/23/remove-legacy-exchange-server-using-adsi/ (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.)
http://technet.microsoft.com/en-us/library/bb288905.aspx
If you have any feedback on our support, please click
here
Cara Chen
TechNet Community Support

Can not uninstall Exchange 2007 64 bit. -

I am in a bit of a pickle here and hope that someone has some suggestions.
Recently, 6 months ago we upgraded to server 2012 and Exchange 2013 64 bit.
Everything has been moved from the 2003 server / 2007 exchange environment and seems to be running correctly.
To be honest the 2003 server was cut off for a few weeks just to make sure that everything was completely moved over to the 2012/2013 environment.
Good news here is it all works except for Exchange 2013 fussing about not being able to see the 2007 exchange server.
Goal:   Completely remove Exchange from
this server followed by removing the server from AD.   It is 7 years old and I want to
cut it off forever.
Problem:   Exchange will not uninstall.   Per
paid support call to Microsoft I was told if I wanted to completely and properly remove all instances of this server from my Exchange environment and AD environment I must use the add/remove programs method to do so.   Unfortunately this process
fails as well as several other items on this server.
Environment / Work done so
far:    The 2003 server running 2007 Exchange was also an AD server.
Yes I know it’s a non-supported environment, but it’s what I was handed and it seemed to work for years.
I have checked and this server is not running any FSMO roles anymore.
When I try to remove the application Exchange, through add/remove programs, I get a little gray box that comes up and says… “Microsoft Exchange Server 2007 Setup Initializing”.
After about 3 or 4 seconds the box disappears and nothing further happens.
The same thing happens when I try to “Change” the application.
Other things of interest:
The Exchange Management Console will not load either.The error message is:CLSID:FX:(76dd58f7-54ba-42e3-a2e0-dbfb674539f)
The Exchange Management Shell will not seem to execute any commands either.I get several messages, but most have the following:“The type initializer for ‘InstanceContext’
threw an exception.
I downloaded service pack 3 and tried to install, but that failed as well.
The follwoing Exchange related services will not run.
Microsoft Exchange EdgeSync
Microsoft Exchange IMAP$
Microsoft Exchange Mail Submission
Microsoft Exchange POP3
Microsoft Exchange Replication Service
Microsoft Exchange Search Indexer
Microsoft Exchange Service Host
Microsoft Exchange Transport
Any suggestions / help would be greatly appreciated.

Ok, the command did not work, but it did lead to the answer I think. However, I'm not sure how to get this working.   Please remember that the console will not load and the all commands, but the help command fail inside the shell.
The exact error message is:
Part 1
----from log file after failed setup /m:RecoverServer
The user who's currently logged on doesn't have sufficient permissions to install this package. You need at least Exchange Server Administrator permissions on the current computer to complete this task.
=== Logging stopped: 5/19/2014 15:52:04 ===
If I use the command:   Add -ExchangeAdministrator -role OrgAdmin -Identity contoso\Ted
I get:
[PS] C:\Documents and Settings\Administrator.SSAINC>Add-ExchangeAdministrator -R
ole Orgadmin -Identity ssainc\Administrator
WARNING: An unexpected error has occurred and debug information is being
generated: The type initializer for 'InstanceContext' threw an exception.
Add-ExchangeAdministrator : The type initializer for 'InstanceContext' threw an
exception.
At line:1 char:26
+ Add-ExchangeAdministrator <<<< -Role Orgadmin -Identity ssainc\Administrator
    + CategoryInfo          : NotSpecified: (:) [Add-ExchangeAdministrator], T
   ypeInitializationException
    + FullyQualifiedErrorId : System.TypeInitializationException,Microsoft.Exc
   hange.Management.RecipientTasks.AddDelegate
Not sure how to add Exchange Administrator rights to the Domain Administrator.   Odd....

Cannot uninstall Exchange 2013 from Server with REFS file system

EX2013 SP1 installed fine on the 2012 R2 server with REFS, but now I need to remove it and reinstall. When I go to uninstall it, I get an error that "the specified installation directory must be located on a NTFS file system". I have tried
via control panel and command line.
I could avoid the uninstall if I could replace the Enterprise Edition license key with a standard key. the "Change License Key" option only allows you to go from standard to enterprise.
Any advice on either issues? (uninstall from REFS or change enterprise key to standard key)
According to the below TechNet article REFS is supported for an install, but maybe not an uninstall
http://technet.microsoft.com/en-us/library/ee832792(v=exchg.150).aspx

Hi,
1. I suggest romving previous Exchange server via ADSIEdit.
NOTE: It is better to try the steps with the assistance of a MS support. Do remember to backup the AD.
2. Then reformat the file system to NTFS.
3. Last, reinstall the new standard Exchange version.
Thanks
Mavis
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Mavis Huang
TechNet Community Support
You should have waited for MEC update on the thread before marking it as Answered!!!!
Why so much of HURRY?????????
Cheers,
Gulab Prasad
Technology Consultant
Blog:
http://www.exchangeranger.com    Twitter:
  LinkedIn:
   Check out CodeTwo’s tools for Exchange admins
Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

Exchange 2013: This mailbox database is associated with one or more active mailboximport / Cannot uninstall exchange

We have a corrupted installation of Exchange 2013 due to installating CU6
New Exchange server is already installed and mailboxes are migrated over, I am now in the process to uninstall the old exchange 2013 so we can decomission it but I get this error when I try to run uninstall
"This mailbox database is associated with one or more active mailbox import,To get a list of all Mailboximport request associated with this database, run Get MailboxImportRequest | ?{ $_.RequestQueue -eq "<Database ID>"}....
But when i run this command I get an error of" The Get-MailboxImportRequest is not recognized as a cmdlet...
Any advise is appreciated
Thanks.

Hi ,
From the error message i came to know few things i have mentioned mentioned below .
If you want to remove the problematic exchange server , you need to remove the existing mailbox import requests.
For that you should need to have the required permission for the user account from which you are trying to execute the command
Just check your user account is having the Mailbox Import Export role permissions .
If you have the required permissions then go ahead and execute the commands
Get-MailboxImportRequest | ft -au ( this is to see how many no of the mailbox import request are available
Remove-MailboxImportRequest
( this command is to remove the entire mailbox import move request)
Once you have done with that , then you start proceeding uninstalling the exchange server .
Regards
S.Nithyanandham
Thanks S.Nithyanandham

Uninstall Exchange contains replicas problem

I am trying to uninstall exchange 2007 (it was never used (installed by default on a sms box) and want to free up space).
I run the uninstall and an error cannot continue. The public folder database cannot "***\Second storage group\public folder database" contains replicas
I then run the command from the exchange shell
Get-PublicFolder -Identity \ -GetChildren | Remove-PublicFolder -Recurse
I get the error cannot find a mailbox to logon the public folder database.
I also run
Get-PublicFolder -Server *** "\" -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server *** -Recurse -ErrorAction:SilentlyContinue
*** server name
And get the same error - I don't know exchange very well so basic instructions would help
Cheers for your time

Hi
If you are sure that the public folder database is not used and all of the folders on it are actually copies of data held elsewhere then you can remove it using ADSIEdit:
http://blog.dargel.at/2012/01/19/remove-public-folder-using-adsiedit/
Steve

Upgrading from Exchange 2007 to Exchange 2013

Hi There,
I have two exchange serveres 2007 SP3 and they are ruining on Server 2008 Ent and 2008 R2 Ent.
I setup a server 2012 R2 and installed an exchange 2013 on it and a friend of mine helped me on setting up the new exchange server and migrating the mailboxes.
Now all the mail boxes are transferred to the 2013, and based on his recommendation I am in the stage of uninstalling exchange 2007 from my old servers.
I am reading about the process but based on the link below I have to do more things before uninstalling
http://www.exchangedictionary.com/articles/clean-uninstallation-of-exchange-2010-mailbox-server-guide
the instruction is for exchange 2010 and some shell commands are not working on shell 2007
I also found the link below:
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx
and I think I am at the stage 8 or 9, but I am not sure and also I do not know what to do if I am at the stage 8
Would you please advise me what shall I do to finish up the project or give me a link for it.
I have searched a lot but I was not able to find a straight forward instruction.
Thank you in Advance

Hi MAS,
Thank you for your reply
I found the instruction below:
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-4-step-by-step-exchange-2007-to-2013-migration.aspx
but I am not sure if I am in the step of moving public folders or not. I have finished the migration of all mailboxes.
When I click on "Servers" I can see the results below:

Exchange 2003 sp2 to exchange 2007 sp1 upgrade error

Hi,
We had Windows 2003 DCs and Exchange 2003 servers. We migrated AD DCs to windows 2008 R2 at parent domain.
We have one parent domain and 10 child domains in remote sites .3 remote sites have been migrated to windows 2008 R2.
Now at parent domain I am trying to install exchange 2007 SP1 on a server with windows 2008 R2 SP1. I am facing certain issues:
1. When I run setup /PrepareSchema on this new exchange server , the organization check fails with error stating that : cannot find at least one DC running windows 2003 SP1 or later in DC=xyx,DC=com. This could be the result of moving DC objects in AD. Check
that at least one DC running windows server 2003 SP1 or later is located in the "Domian Controllers" OU and rerun setup".
2. When I try to install exchange server 2007 , I get the following error
Object cannot be saved because its ExchangeVersion property is 0.10 (14.0.100.0), which is not supported
by the current version 0.1 (8.0.535.0). You will need a later version of Exchange.".
Can any one shed light on this issue.
Regards
Syed
sa

You cannot install Exchange 2007 SP1 on Windows 2008 R2 SP1 as it is unsupported.
Only version of Exchange 2007 supported when OS is Windows 2008 R2 or R2 SP1 is Exchange 2007 SP3.
Where are you installing Exchange ? child or parent domain ?
2. When I try to install exchange server 2007 , I get the following error "Object
cannot be saved because its ExchangeVersion property is 0.10 (14.0.100.0), which is not supported by the current version 0.1 (8.0.535.0). You will need a later version of Exchange.".
Above error indicates that Exchange setup is trying to modify
a version of an object which might have been created when organization is prepared for Exchange 2010. don't you have exchange 2010 Servers already in your environment ?
Please give more information about your current email infrastructure
and whether if you are installing exchange on parent or child domain?
Pavan Maganti ~ ( Exchange | 2003/2007/2010/E15(2013)) ~~ Please remember to click “Vote As Helpful" if it really helps and "Mark as Answer” if it answers your question, “Unmark as Answer” if a marked post does not actually answer your
question. ~~ This Information is provided is "AS IS" and confers NO Rights!!

Errors Decommissioning Exchange 2007 Server

We are attempting to decommission an Exchange 2007 Server (single server). We have already gotten 2010 set up, installed, mailboxes moved and public folders moved. We went through and removed the replicas on the old server as well as removing the mailbox
database and public folder database.
From this point we are attempting to Uninstall Exchange 2007 using either the Wizard or through cmd using setup.com /mode:uninstall after navigating to the Bin folder in the Exchange server. Each time however, we get the same error regardless of how we are
doing it.
We uncheck all roles, hit Next, and it fails during the Readiness Check within 10 seconds on each role (Mailbox, Client Access, Hub Transport) each time saying: 'An error occurred while running the test. The Computer may be out of Memory, or the XML files
have been modified. Parameter name: ConfigurationFileLocation'
I've gone through using ADSI Edit and removed the server from the Configuration>Services>SiteDomain>Administrative Groups>Exchange Administrative Groups>Servers
and it was none existent in the Databases section.
Even after all of these steps I'm still getting the error about the memory or XML file issue. Is there a way to replace the XML files with 'clean' ones or a way to repair the existing ones? I'm just simply wanting to uninstall it at this point.
Thanks!

Hi,
From your description, I would like to clarify the following things:
1. It is not recommended to uninstall Exchange server in ADSIEdit.
2. The above error indicates that one of the xml files is corrupted, you need to re-download it for troubleshooting.
Hope my clarification can be helpful to you.
Best regards,
Amy Wang
TechNet Community Support

Decommission Exchange 2007 Mailbox Server from Cluster

Hi! I realize this is an Exchange 2013 forum, however as I do not see any forums for older flavors of Exchange I'm going to post this here. If a better forum exists please let me know and I'll happily move to that forum for my answers.
I am just finishing a migration from Exchange 2007 to Exchange 2013. In the Exchange 2007 environment I have 2 CCR Mailbox Clusters. While working to decommission the first of the two clusters I successfully evicted the passive node, however
I mistakenly evicted the active node rather than removing it by running the Exchange Setup Wizard as outlined in the TechNet article "How to Remove the Active Mailbox Role from a CCR Environment".
Now, when attempting to uninstall Exchange 2007 using the Setup Wizard in Add/Remove Program I get the following error during the prerequisite check for the 'Mailbox Role':
Error:
Exchange server FQDN was not found. Please make sure you have typed it correctly."
Setup then completes.
Is there a way to cleanly uninstall Exchange 2007 and clean-up Active Directory?
Thanks!

Hi Jesse,
Thank you for your question.
We could run “ADsiedit.msc” in run, then navigate
Configuration [<domainController>.contoso.com]> CN=Configuration,DC=contoso,DC=com> CN=Services> CN=Microsoft Exchange> CN=<OrganizationName> CN=Administrative Group> CN=Exchange Administrative Group>CN=Server
We could check if mailbox server is existed in this container, we could remove it.
Notice: Before we remove it, we could make a backup for AD database. We suggest you call MS engineer for help.
If there are any questions regarding this issue, please be free to let me know.
Best Regard,
Jim
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Jim Xu
TechNet Community Support

Exchange 2007 Decommissioning, post Office 365 migration

Hello,
We have four Exchange 2007 servers in four different sites, single AD. All four Exchange servers are CAS, Mailbox, Hub, secondary domain controllers. We have migrated to Office 365 successfully, and would like to remove the Exchange 2007 servers.
I have stopped the Exchange services on all four for at least a week and tested Office 365 mail flow with no issues. My questions are:
1) Can I expect to simply uninstall Exchange 2007 from each server, one by one, without a negative impact to Active Directory?
2) Should/can the many Mailbox Databases be deleted prior to uninstalling Exchange 2007? Not all mailboxes had to be migrated to Office 365, and they contain data that we no longer need.
If there is a 'safe' method to remove Exchange in a multi-site setup, I would prefer to try that before having to dig through ADSIedit.
Thank you in advance.

Hi Chase,
here's an
official guide for uninstalling Exchange 2007. Please also note the other documents in the same library directory (see navigation pane to the left).
Cheers,
Fred
There's no place like 127.0.0.1

Remove Exchange 2007 from an Exchange 2013 coexistence.

Hey everyone,
I've just installed Exchange 2013 on a new server and all is working great. It is currently in coexistence with our old Exchange 2007 server. I've since shut the server down and Exchange 2013 has been working without issue. However, I haven't
been able to find any articles on this matter so I figured I would ask the question here.
How do you remove Exchange 2007 from the coexistence. Do I just uninstall Exchange 2007 from the old server and it will remove itself from the server and the domain? Any help/link on this matter would be greatly appreciated.
Thank you,
Chris

Hi Simon,
I am about to do the same exercise as Chris, I just would like some clarity.
1) When you say mailbox Database, do you mean make sure there are no more mailboxes that you want to move over, or are you actually meaning delete the physical DB on the exchange 2007 server.
2) If there is no use of public folders does anything need to happen?
Thanks,
Terry

Cannot send email from Exchange 2007 to Exchange 2013 - Coexistence

Existing Exchange 2007 SP3 1 MBX, 2 CAS/HT, 2 ET servers.
I have added an Exchange 2013 server with MBX/CAS role.
Email will flow from Ex2013 server no problem. Mail from Ex2007 systems cannot deliver to Ex2013 boxes, it dies in queue with a 4.4.7 expired message after issuing a delay message.
I can telnet to ports 25, 587,717,465,475, and 2525 from Ex2007 HT role to new Exchange 2013 server. I can send email from Ex2007 HT role server to new Exchange 2013 server using telnet to port 25.
A ‘get-mailbox’ from the Ex2007 HT role server returns the server and database properly on the test users on Exchange 2013 server.
The only strange thing I am seeing is from the Ex2007 systems, a ‘get-exchange server’ command shows the new Ex2013 server as role ‘16439’ which looks to perhaps be normal.
Why is email not flowing to the new users on Exchange 2013?

You should have exchange server authentication ticked in Default Receive connector in Exchange2007.
Exchange 2007 and Exchange 2013 in the same subnet/network. if not please check any spam agent running between the networks. Are you running antispam on Exchange2013 ?
MAS

Cannot uninstall Exchange 2007

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