Qmail 64-bit

When building QmailRocks on 64-bit Linux you will see this error when you get to step 6, installing Vqadmin:

 checking build system type... Invalid configuration `x86_64-unknown-linuxoldld': machine `x86_64-unknown' not recognized
 configure: error: /bin/sh ./config.sub x86_64-unknown-linuxoldld failed

Go back to just before the step where you configure:

 ./configure --enable-cgibindir=/path/to/your/cgi-bin --enable-htmldir=/path/to/your/html/directory

Then run:

 libtoolize --force

Now start over at the configure step again and