Mail server spam filter

Is there any way to filter spam on the server prior to it being sent to my Junk folder? 99.9% of the emails sent to the Junk folder are actually junk but I still have to go through it to check for any misses and with 100+ a day, its a task I can do without.

Is it possible to block emails from even getting to my Junk folder? I have a ton of "Camp Lejune" emails as an example and setting up a filter to block that would lessen the amount of emails I have to scan through.