Has anyone here successfully configured Thunderbird 5.0 with a Dreamhost mail server? I can’t get it to work. The sticking point seems to be that Thunderbird wants to log me in as "email@example.com" instead of "firstname.lastname@example.org." The login is constructed automatically from the provided mail server name, and I have found no way to work around it.
They way to work around it is to click on the little “Manual config” button in the lower left of the dialog when adding an account. You then get to specify the server names and the username separately.