CAS *must* come first in Exchange 2010. http://technet.microsoft.com/en-us/library/bb629560(v=exchg.141).aspx
From: [email protected] [mailto:[email protected]] On Behalf Of William Robbins Sent: Monday, September 8, 2014 5:24 PM To: [email protected] Subject: Re: [Exchange] Patching Exchange We've seen issues where if the CAS isn't updated first/at same level it will fail to connect to the mailboxes. - WJR 🙈🙉🙊 On Mon, Sep 8, 2014 at 4:03 PM, Dave Lum <[email protected]<mailto:[email protected]>> wrote: I have a three-server Exchange Exchange 2010 environment currently - one CAS and two mailbox servers. They are all currently at SP2 update0. Without getting into the why I'm asking, is there any risk in brining the mailbox servers to E2010SP3UR7 while leaving the CAS server where it is? It would be a short-term (few days) scenario but my guy says there may be some reasons to not to have them too far off patching levels. Comments? Dave
