  Hadronic contributions dominate the uncertainty of the standard model
prediction for the anomalous magnetic moment of the muon. In this work, we
describe an ongoing lattice calculation of the hadronic light-by-light
contribution, performed with staggered fermions. The presence of quarks with
different tastes complicates the analysis of the position-space correlation
function. We present a suitable adaption of the "Mainz method". As a first
numerical test, we reproduce the well-known lepton-loop contribution. Results
at a single lattice spacing for the light quark contribution, using two
volumes, are then discussed. Our study of the long distance behavior and
finite-volume effects is supplemented by considering the contribution of the
light pseudoscalar-pole. The corresponding transition form factors have been
evaluated in previous simulations on the same ensembles.
