I have installed mailutils on Ubuntu 12.10 and I have run into a problem where the domain being attached is the fully qualified host and not just the domain. For example,
mail user2 [enter] then enter message and send produces a from address of firstname.lastname@example.org
I want the from address to be just email@example.com. I did not have this problem in 12.04, it only started when I upgraded to 12.10. Is there a system config file somewhere that would allow me to only set the domain.com as being added to the username when sending mail and not the full host name?