asked on

Exchange 2013 , Exchange 2007 RPC over HTTP issues during coexistance

I am in the process of cutting over From exchange 2007 to exchange 2013.
I have configured all the exchange 2007 Virtual directories with the legacy namespace
I have set the external URL for activesync directory on 2007 to $Null.
Outlook anywhere is configured and enabled on 2007 and 2013.

on 2013 all Virtual directories are configured with the external name webmail.domain.com
on 2013 I have configured the 2003url to legacy.domain.com

for the outlook provider the server and EXPR are set to webmail.domain.com

when I move services to 2013 OWA, ActiveSync, work for both 2007 and 2013 users.
RPC and autodiscover update and work for all internal computers on the domain.

the issue I am having is for 2007 users that connect over RPC over HTTPS once services are moved to 2013.

users running both outlook 2007sp3 and outlook 2010 get error that cannot connect to server webmail.domain.com. or exchange server is unavailable.

now ping responds correct, owa works on the machines just not RPC

Simon Butler (Sembee)

"on 2013 I have configured the 2003url to legacy.domain.com"

You don't need that setting.

How is Outlook Anywhere configured on the Exchange 2007 server? External URL set? Which authentication setting is in place?

Simon.

mndthegap1

ASKER

thank you for the reply.

the Virtual directories for 2007

Owa external: legacy.domain.com internal: legacy.domain.com
oab external: legacy.domain.com internal: legacy.domain.com
WS external: legacy.domain.com internal: legacy.domain.com
AS external: internal: legacy.domain.com
UM external: legacy.domain.com internal: legacy.domain.com

Outlook Anywhere external webmail.domain.com ssl offloading: OFF

virtal directories for 2013

owa external: webmail.domain.com internal: webmail.domain.com
oab external: webmail.domain.com internal: webmail.domain.com
WS external: webmail.domain.com internal: webmail.domain.com
AS external: webmail.domain.com internal: webmail.domain.com
UM external: webmail.domain.com internal: webmail.domain.com

outlook anywhere: external: webmail.domain.com internal: webmail.domain.com

permission:

2007 Cas server

external Basic Internal NTLM IIS Basic,NTLM

2013 CAS server

external Basic Internal NTLM IIS Basic, NTLM, Negotate

Simon Butler (Sembee)

Are you aware of this article:
https://support.microsoft.com/kb/2794253

Change the Outlook Anywhere configuration on Exchange 2007 to NTLM only.

Simon.

mndthegap1

ASKER

THank you for the link. No I wasn't aware of that.

I verified that IPV6 is disabled on the 2007 CAS server.
so that wont be it, so just switch to NTLM for all 3

Simon Butler (Sembee)

If you make the switch, don't forget to run IISRESET so the change is written to IIS correctly.

Simon.

mndthegap1

ASKER

thanks again.

just to confirm, I am change the client auth, IIS auth ? or am I just doing this on IIS ?

ASKER CERTIFIED SOLUTION

Simon Butler (Sembee)

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial