/usr/lib/x86_64-linux-gnu/libdspam.so is in libdspam7-dev 3.10.2+dfsg-13.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libdspam.so.7.0.0
/usr/lib/x86_64-linux-gnu/libdspam.so.7.0.0