From change description for Freenet 0.7.5 build 1470: "This release fixes Freemail problems that prevented sending mail, and removes a compromised opennet seed node." Someone should probably make an ebuild for 1470 or later or backport the change to get rid of the compromised seed node. https://emu.freenetproject.org/pipermail/devl/2015-August/038156.html https://freenetproject.org/news.html#20150816-1470-release
Thanks for the report and sorry for the delay. I have just added freenet-0.7.5.1470 to the tree, it should be at your local rsync tree within a few hours.