mailutil conflicts with imap-uw

[Paul Galbraith]

I'm trying to install the 3.7 mailutil package, but it conflicts with 
imap-uw, which does not appear to contain mailutil at all.

        $ sudo pkg_add -F conflicts mailutil-uw-2004.357.tgz
	Can't install mailutil-uw-2004.357 because of conflicts 							 
(imap-uw-2004.357)
        /usr/sbin/pkg_add: mailutil-uw-2004.357.tgz:Fatal error
Can anyone point out anything obvious I'm doing wrong?