Currently we are running a barracuda box to do our spam filtering. I would like to do away with it and use Untangle for Spam filtering. So to test if Untangle could filter spam as well as barracuda I setup untangle like this:
Router---Untangle---switch-----barracuda--------Exchange email server
(Barracuda and exchange are not directly linked but in the same switch...i just couldnt draw it)
Normall all email is sent to barracuda which then forwards to our exchange box. Putting untangle where i have it should filter email before it gets to the barracuda box. I have the spam filtering turned on high. It shows that its scanning some and quaratining some. I can now login to the barracuda box and see what the untangle box has missed. Not only is there massive amounts of spam getting through....like 20-30 messages a minute....there is way more email messages passing to barracuda then what untangle says that its scanned. I have set the concurrent scans to 100 to see if that would help. Also I turned on the phishing filter and it scans many more messages then does the spam filter. Shouldn't those be the same?
Is there anything I can do to check and see whats going on? All email is SMTP coming in.