The tree appears to be a Siberian elm.
The wound in the bark does not look to have be created too recently. The weeping/wetness you are seeing is an issue known as wet wood. It is not uncommon for this species of tree. We have a factsheet on the issue which can be found here: http://extension.colostate.edu/topic-areas/yard-garden/bacterial-wetwood-2-910/
If you have any questions about the information given in the above link please let me know.