@rthorntn.........thank you for the update/solution and welcome to the forum. It's great when members can take the pointers we give and do their own investigation instead of just expecting answers on...
Have you looked in the logs? Remember also even with directory set to 777 external privileged account are nor admitted to write unless you have configured so... Only I have no solaris just now to...
NFS is (almost..) just like any other file system from a user point of vue, so unix perms apply,
From your mac without credentials works the same as anyone arriving being anonimous:anonimous ......