I have the Wildfire 2.4.4 installed and setup for me. However I just recently tried to change the email settings from email@example.com to firstname.lastname@example.org because I cannot get it to send out any emails. However after it tells me it has saved the changes correctly it still shows email@example.com as the server username.
I just recently had to restart the server because it seemd to lock up. I would not longer let me log in and the admin console would no longer respond as well. (this is before I started to experience the problems with email setup page.