possible to have usernames for emails with no extensions?

I have a server that I wish to migrate to virtualmin. This server has many email accounts utilizing usernames but no extensions.

Is there a way to have email accounts under a virtual domain with no dot extensions?

Thanks

Status: 
Closed (fixed)

Comments

Yes, but only if they don't clash with any other domain.

You can enable this at System Settings -> Module Config -> Defaults for new domains -> Include domain name in usernames? , by selecting "Only to avoid a clash"

Automatically closed -- issue fixed for 2 weeks with no activity.