  We solve exactly the Dyson-Schwinger equations for Yang-Mills theory in 3 and
4 dimensions. This permits us to obtain the exact correlation functions till
order 2. In this way, the spectrum of the theory is straightforwardly obtained
and comparison with lattice data can be accomplished. The results are in
exceedingly good agreement with an error well below 1\%. This extends both to 3
and 4 dimensions and varying the degree of the gauge group. These results
provide a strong support to the value of the lattice computations and show once
again how precise can be theoretical computations in quantum field theory.
