Dear MS Support,

I did migrate Exchange 2007 to Exchange 2013

The install complete, the exchange 2007 and 2013 can work together successful

DAG has created and work fine

Below is capture on exchange group after migrate

The exchange 2007 work fine with outlook anywhere, all the users can connected and send and receive mail in 5 year

The cerificate enroll with Alternative Names: mail.biendongpoc.vn

The autodiscover on exchange 2007:

[PS] C:\Windows\system32>Get-ClientAccessServer | ft Identity,*uri* -AutoSize
Creating a new session for implicit remoting of "Get-ClientAccessServer" command...

Identity      AutoDiscoverServiceInternalUri
--------      ------------------------------
BDPOC-SERVER1 https://mail.biendongpoc.vn/Autodiscover/Autodiscover.xml

I have created new certificate for Two exchange 2013

The certificate enroll with Alternative Names: cas.biendongpoc.vn

I have create cname cas point to dag  on DNS server

I have create A record autodiscover.biendongpoc.vn point to IP of dag.biendongpoc.vn

I did migrate mailbox from exchange 2007 to exchange 2013, the migrate successful , the outlook can connected to Exchange 2013 and working perfectly

Our problem, the account exchange 2007 work not stable , sometime it connect to mail.abc.com, sometime it connect to cas.abc.com

If the outlook connect to cas.biendongpoc.vn, the request put password and i can't connect to exchange 2007, if outlook connect to mail.biendongpoc.vn i can connect

It is not stable for current exchange 2007

Anyone who can help me ?

Thanks

Below is autodiscover in whole system:

[PS] C:\Windows\system32>Get-ClientAccessServer | ft Identity,*uri* -AutoSize
Creating a new session for implicit remoting of "Get-ClientAccessServer" command...

Identity      AutoDiscoverServiceInternalUri
--------      ------------------------------
BDPOC-SERVER1 https://mail.biendongpoc.vn/Autodiscover/Autodiscover.xml
HCM-EXCHG-001 https://cas.biendongpoc.vn/Autodiscover/Autodiscover.xml
HCM-EXCHG-002 https://cas.biendongpoc.vn/Autodiscover/Autodiscover.xml


[PS] C:\Windows\system32>

The outlook anywhere configuration on Exchange 2007

Hi huynhtrongnhatminh,
I suggest you please go through this article.
http://blogs.technet.com/b/exchange/archive/2014/03/12/client-connectivity-in-an-exchange-2013-coexistence-environment.aspx

Please check this for step by step guide.
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-1-step-by-step-exchange-2007-to-2013-migration.aspx

Please point your autodiscover and commonname to Exchange2013 CAS
Please configure your URLs. There is no CAS array in Exchange2013 but the concept of single name space remains.

You need to have an A record (e.g. legacy.domain.com) in yout external DNS and add that name (legacy.domain.com) in your certificate for exchange 2007 users to have access externally. 

Configure your commonname URLs in Exchange2013. Point commonname and autodiscover to exchange2013 in both external and internal DNS servers

Configure URLshttp://www.mustbegeek.com/configure-external-and-internal-url-in-exchange-2013/
No CASARRAY in 2013http://exchangeserverpro.com/exchange-2013-client-access-server-high-availability/

Please configure splitdns or pinpoint DNS in your internal DNS server if not configured
http://exchange.sembee.mobi/network/split-dns.asp

Dear Sir,

I have question, i config internal and external URL for outlook anywhere on exchange 2007

they are same: mail.biendongpoc.vn

but when i test auto config on mailbox at exchange 2007 the internal OWA point to cas.biendongpoc.vn

You mean external OWA URL? it should point to legacy.domain.com/owa as Exchange2007 users will be redirected to legacy.domain.com or what ever name you configure.
Your Exchange2007 clients will open https://legacy.domain.com/owa. Please check this
http://blogs.technet.com/b/meamcs/archive/2013/07/25/part-3-step-by-step-exchange-2007-to-2013-migration.aspx

Please run "iisreset/ noforce"  if you see the same URL.

Dear Sir

Can i use mail.biendongpoc.vn for exchange 2007, because the exchange 2007 current use mail.biendongpoc.vn for outlook anywhere

We must run iisreset/ noforce if i use mail.biendongpoc.vn for exchange 2007 ?

Please configure the Outlook Anywhere external host name to point to the Exchange 2013 Outlook Anywhere host name. Exchange2013 will proxy the request to Exchange2007.
Please read this for more details regarding Exchange2007 coexists with 2013.
https://technet.microsoft.com/en-us/library/bb123741

Please run this command if not set. Authentication is very important when Exchange2013 coexists with Exchange2007/2010.

Set-OutlookAnywhere -Identity 'EXCH2007servername\Rpc (Default Web Site)' -ClientAuthenticationMethod Basic -SSLOffloading $False ExternalHostName <Exchange2013HostName> -IISAuthenticationMethods NTLM, Basic		

Finally, the problem has solved, thanks for your great help MAS

Dear Sir,

We have two client from internet using outlook anywhere can't connect to new exchange 2013,

I have import certificate manually, the error on certificate is: "windows does not have enough information to verify this certificate site"

All user in internal work perfectly

Please help me to check the error certificate

I found the solution

When i import certificate for anywhere outlook connect, i am missing import CA root certification to client Machine, after import root CA certificate on client machine, the outlook connected well

• Marked as answer by huynhtrongnhatminh Tuesday, January 27, 2015 6:09 AM

Exchange cluster work fine now, the POP and IMAP work fine on exchange 2, telnet port 110 to exchange 2 as below:

But the POP3 and IMAP on exchange 1 not working, telnet on port 110 exchange 1

All configuration on exchange 1 and 2 are the same

Anyone can help me ?

Anyone who can help me