automatically add users to group by domain

[daphi]

Hi,

we would like to automatically add users from one domain to a group.

I.e. if bob@example.com sends an E-mail to the support desk the manager (bill@example.com) of that group would automatically see the support request in his list of open tickets.

I know we could shedule our staff to manually go through the list of users, to add them to the appropriate group, but isn't there a way to automatically do that?