Yesterday I noticed that I got zero emails.  I logged into control panel this morning, and all of the Default Address settings under Mail Manager had changed to ':fail: No Such Address Here'.  I had to change them all back to the correct setting.  In the meantime, all the email sent to my domain yesterday bounced back to the sender.

I have changed nothing in my site settings recently; I haven't even been logged into control panel.  How did these settings change without my knowledge?  How can I have any faith at all in Lunarpages hosting?  How can I prevent this from happening again?