[Mimedefang] cannot install mimdefang

[Tony]

I'm a beginner running a raq550 on strongboilt2 (Centos 4.8) and I've
downloaded and unzipped mimedefang-2.67. The install instructions say:
4) Configure, build and install the MIMEDefang software:
./configure
make
make install

but at the first step I get:

[root at home mimedefang-2.67]# ./configure
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details.
Press any key to continue...

In the mimedfang-2.67 folder there's no ./configure file, I don't know 
if mimedefang is compatible with my OS. Can anyone advise?