Looks to be a geebung, somebody better than me can hopefully narrow it down to the species level. The fruits should be tasty once fallen, if the birds let them get that far!
Does not appear to be p. linearis. Leaves are not fine enough, no dark flaky bark with red behind and going on others with the appearance of those pictured it will never grow to become like that. Best match from those with sightings on the site appears to be p. mollis subsp livens. Happy to be proven wrong though :-)