PREREQUISITES

You need libopendmarc from Trusted Domain Project's opendmarc distribution.
You don't need the complete opendmarc package.
If you are installing it for the sole purpose of installing this module, 
follow these instructions:

- Download opendmarc-x.x.x-tar.gz from the project's Sourceforge area
- Extract the downloaded file in some directory (it will be normally named opendmarc-x.x.x)
- cd opendmarc-x.x.x
- ./configure --disable-filter [additional configure options if applicable, e.g. prefix=somewhere]
- make
- make check
- make install
This will install the libopendmarc libraries and includes "somewhere".

INSTALL

You need to know where the "somewhere" (see above) is, unless the "somewhere" is a standard location 
that Perl is be able to find without help.

In case it isn't kindly tell Makefile.PL where to locate the include and libraries using -L and INC:

perl Makefile.PL LIBS="-Lsomewhere/lib -lopendmarc -lresolv" INC="-Isomewhere/include"