exchange 2003 exchange 2010 during migration if you install hub and cas can you still have exchange 2003 recieve and send mail
Thursday, March 29, 2012 3:54 PM
Hi expert..im kind of new to exchange 2010
im doing a migration of exchange 2003 to exchange 2010.
My question is Do i have to install the CAS and Hub together for my outlook 2010 clients to stay connected to my exchange 2003.
and if I do install the hub can exchange 2003 still handle mail flow from and to the internet...
currently we only accept mail from postini which does our virus and spam filtering.....
if I do not make any changes in DNS will anything change with the introduction of exchange 2010 hub and cas role.....
I attempted to just install the CAS server with the following dns entries.
legacy.domain.com---going to FE exch03 .
mail.domain.com----going to exch2010 cas
autodiscover.com---going to exch201 cas
some reason all my outlook client could no longer connect to my exch03 server....
does this require the hub to be install as well..???
thanks in advance experts...
Thursday, March 29, 2012 5:27 PM
Have you installed all the prerequisites? If you have done that your users should be able to access both 2003 and 2010 which ever holds their mailbox.
Try below link for good info.
Thursday, March 29, 2012 6:31 PM
yes i did all the prerequisites, preparead, exbpa, server 2008 prep...
when i install the CAS there was no error......owa was redirecting to legacy.domai.com
only when i enable the autodiscover.domain.com and mail.domain.com did my outlook2010 client freeze up..after a force close they could not connect to my exchange 2010 server??
should outlook be offline when these changes are made...do i have to manually configure outlook again??
Friday, March 30, 2012 1:31 AM
Ex2010 won't come into play until you will migrate box(s) over to your 2010 mailstore. As long as you are not resolving your production namespace to the CAS server everything will be processed by 03 as usual.
If you did point your production name space to CAS you would have to configure redirect to 2003 for legacy boxes.
Outlook 2003 doesn't utilize autodiscover. That function is build into Outlook 2007/2010. Like i mentioned before that would come into play once you will migrate boxes to 2010 mailstore.
Friday, March 30, 2012 10:46 AM
all my outlook clients are on 2010. will introducing the autodiscover dns cause them to disconnect from exhcnage 2003?
when i install the CAS I only made one entry in the DNS (legacy.domain.com) and that went to my EX2003 FE server.
that did not cause any issues...
later when i made the dns entry autodiscover and mail both pointing to my Exch2010 server is when my clients loss connection...
all the mailboxes are on exchnage 2003
our production name space is configure: example1.domain.com mx record (exch03be)
example1.domain.com host record (exch03be)
exampl1a.domain.com mx record (exch03FE)
exampl1a.domain.com host record (exch03FE)
example2.domain.com host record (exch2010)
legacy.domain.com alias record (exch03 FE)
new entries autodiscover.domain.com alias record (exch2010)
mail.domain.com alias record (exch2010)
Saturday, March 31, 2012 2:58 AMdo you have mailboxes that are 2010 mailstore?
Monday, April 02, 2012 7:49 AMModerator
Exchange 2003 user will connect to mailbox server directly.
What is the error when client try to connect to Exchange Server? Which client that you use to test? Owa? Outlook?
What is the URL that you use to access OWA?
Besides, I recommend you to enable IIS logging.
Please do NSlookup from the below website and then post the result here.
TechNet Community Support
- Edited by Xiu Zhang - MSFTModerator Monday, April 02, 2012 7:56 AM
Monday, April 09, 2012 2:50 AMModerator