Both inn-2.3.3-5 and cleanfeed-0.95.7b-16 think they own the directory /usr/lib/news/bin/filter, and they have different permissions for it, so it's impossible to set the permissions on it in such a way that "rpm --verify" won't complain about it for either package. Either only one of them should own it, or their permissions need to match. I suspect that inn should own it and cleanfeed should have a dependency on inn.
Fixed in current package. Thanks a lot, Florian La Roche