Preheat oven to 350 degrees F. Grease and flour a 10 inch tube pan.
In a large bowl, mix flour, baking soda, salt and sugar. Make a well in the center and add eggs, vanilla, oil and milk. Mix well and fold in the poppy seeds. Pour into a 10 inch tube pan.
Bake at 350 degrees F (175 degrees C) for 1 hour, or until a toothpick inserted into the cake comes out clean. Cool for 10 minutes in the pan, then turn out onto a wire rack and cool completely.
