To me it now looks to be the same problem like this bug here:
https://bugs.launchpad.net/ubuntu/+source/msttcorefonts/+bug/1713615 . There people are reporting that the newer debian package does not have the problem with the mirrors. I've downloaded http://ftp.de.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.7_all.deb and installed it, it succeeds in downloading all the fonts.
To me it now looks to be the same problem like this bug here:
https:/ /bugs.launchpad .net/ubuntu/ +source/ msttcorefonts/ +bug/1713615 . There people are reporting that the newer debian package does not have the problem with the mirrors. I've downloaded http:// ftp.de. debian. org/debian/ pool/contrib/ m/msttcorefonts /ttf-mscorefont s-installer_ 3.7_all. deb and installed it, it succeeds in downloading all the fonts.