Pyroh [1] filed a deletion request for dmpc [2]: The package source is gone, and judging by the date on the following blog it has been that way for a while.
http://inconsolation.wordpress.com/2013/08/03/dmpc-a-client-for-a-client-for-a-daemon/ [1] https://aur.archlinux.org/account/Pyroh/ [2] https://aur.archlinux.org/pkgbase/dmpc/