Thanks for reporting the bug.  It looks like you ran the 'configure' script with 
the argument '--with-mmdf'.  This doesn't work on Fedora 21, and as far as I 
know doesn't work on any currently-supported Emacs platform.  Support for 
MMDF-based MTAs was removed from GNU mailutils and related software years ago. 
I expect we should remove it from Emacs too, as it's causing configuration-time 
trouble.  I installed the attached patch, which should fix the problem, and am 
marking this bug as done.