I'm working at a place where we've put in Exchange 2007 CAS servers and still have Exchange 2003 mailbox servers (for a little while). Prior to putting in the Exchange 2007 servers EV on OWA worked. We've run the owauser.wsf script with the new servers in the ExchangeServers.txt file and installed the OWA extensions on the CAS servers.
Users with mailboxes on the Exchange 2007 servers see the EV buttons and can open archived emails. Everything is good.
Users with mailboxes on the Exchange 2003 servers do not see the EV buttons, but can see the archived email icon and can open archived emails.
Anyone seen this before or know what we can try?
