We have a Microsoft Exchange 2003 server which clients access via Outlook 2007 & 2010. There's one small annoyance which is that when a user sends to a distribution group, it's cached so that when they use it again, the name pops up as they type and they can select it.
Apparently what's happening is that people are selecting the cached name but when the distribution list is updated (e.g. a new user is added) the Outlook clients don't send to it if they've been using their cached recently used name. They have to manually select the distro list using the To: button.
Is there a way to change this behaviour so that Outlook either doesn't cache the distro name or updates it when it updates its copy of the GAL?