Not really...
If water is weeping from the post, most likely it is seeping out of the rudder, which may indicate more serious problems. There might be water in the rudder, which might mean the welds could be compromised. Hard to make a good call without taking the rudder apart, which is a big job. A test might be to drill a very small hole on the bottom edge and see if anything pours out. If it does, you've got a problem. If it doesn't, things might be OK. One item written up in Mainsheet a few years ago dealt with sealing the joint between the rudder and the post with epoxy. The minimal play seems normal.