UNC303 - Upgrading from Microsoft Exchange Server 2003/2007 to Exchange Server 2010: Tips, Tricks, and Lessons Learned

Rand Morimoto, author of the bestselling book "Exchange 2010 Unleashed" shares over two years of early adopter and real-world experience in upgrading from Exchange 2003 and Exchange 2007 to Exchange 2010. Rand covers strategies in preparing for a successful upgrade as well as common pits and traps to avoid in the process. [TENA10] – being taped

Resource: www.expta.com, www.networkworld.com/community/morimoto
- Search CAS

Key points:
1. Preparation tool:
- Exchange remote connectivity analyzer: test cas, smtp routing
- Exchange server deployment assiantant http://technet.microsoft.com/en-us/exdeploy2010/default.aspx#Home
- Delegate configurations to look out for: CAS naming space and SSL certificates
- Changing out certificate on exchange 2007 for 2010 integration did not require a user to reauthenticate
- In a 2003/2007 environment, 2010 hub relays only with 2007 hub
- Exchange UM - you bring in 2010, you need new dial plan. Mailbox moves from 2007 to 2010 will require reconfiguration of UM for users
- OCS will automatically talk to 2010
- No public folder migration, replication is the way you migrate – this could take few days so plan it out
- PFAdmin is good tool for checking PF replication
- OWA public folder access only works with 2010
- You can move users during the day from 2007 to 2010 but you want to plan out how much (think about log generation and backups...)
- Cas server processes the mailbox moves. Once you submit move request, the cas server handles all move request at which point your machine is out of the loop

Concerns/unknowns:
1. Decomission steps for exchange 2007 in mixed mode
- You want to use setup.exe to properly remove the legacy environment

2. Plan to get mail.outlook.caa.com with ISA. We currently use outlook.caa.com, how will this impact users
- Current SAN used: outlook.caa.com, owa1.caa.com, owa2.caa.com, autodiscovery.caa.com,
- Going to: mail.caa.com, autodiscovery.caa.com, legacy.caa.com
3. Can bes 5.0 MR1 application deliver mail for users on both 2007/2010 env?