error installing courier

[avinash.godara]

i tried to install but when gave command:
sudo rpmbuild -ta courier-authlib-0.62.1.tar.bz2

an error msg appeared:-

bunzip2:I/O or other error, bailing out. Possible reason follows.
bunzip2: Broken pipe
Input file = (stdin), out file = (stdout)
error: Failed to rename ~/rpm/SPECS/rpm-spec.aAISuq to ~/rpm/SPECS/rpm-spec.aAISuq : No such file or directory

please help