The ebuild do an doins for all files that are in /var/amavis/.razor/*.{conf,lst}. But those files are added by razor and that create a collision on updating amavisd-new. Because ebuild try to overwrite those files that are not owned by any package. I think the ebuild must leave those files.
OK, I've changed amavisd-new-2.4.4 ebuild so that it doesn't do anything if amavis' .razor/ dir exists. IMO that should fix this collision issue. Can you please test?
It seems to work Thanks
Yay!