Recreating users/Outlook history

[disturbedone]

I am pretty sure I know the answer to this but I'd like to confirm.

The scenario:
* Multiple Distribution Groups for class groups are created on a Friday using a script & CSV of data. Group name would be eg CLASS123 and have email address CLASS123@domain.local
* Teacher uses Outlook 2007 to send to the DL. Outlook retains this so when they start typing 'CLA...' it brings up the group and they just select it.
* The following Friday the script is run again and gets updated data from a new CSV. The script deletes all DLs starting with 'CLASS', creates DLs with exactly the same name and (possibly) different members
* Teacher uses Outlook and starts typing 'CLA...' and it brings up the DL from it's history and they select it but after sending it gives an error and is not delivered

I suspect that the Outlook history is looking at a unique identifier in AD so even when the DL is recreated with the same name that it will never send to it even though the email address is exactly the same. Is that correct? If so, as I suspect, then it's a bit of a pain but the only real way around it is for teachers to select the DL from the GAL rather than use Outlook history.

Can someone confirm?

 

[Zelandakh]

You can script the creation and additionally set the legacyexchangedn which ought to fix this issue.
Or adjust the script so that it doesn't delete the classes