Not sure what you mean guys, unless I mis-understood the question he was asking? I am on a BES and maintain a corp BES, I have run into failing activation issues plenty of times and usually it's a typo with the email address or password..or interrupted data connection. after contacting the vendor and confirm all account settings are correct which is what he said he did to correct his BIS to BES..When everything works but activation, the next thing to do is remove his BES account and re-add him..that will fix users who fail on activation. When multiple users are failing activating blackberry's, a reboot of the BES maybe required.
Works for me the past 4 years...Running 2 Blackberry ENT ver: 4.1.6.9 clustered servers with Exchange 2003 (1242 users)..and one BES on Exchange 2007 (15 users)