Not only do you have to setup filters to block junk mail, but you also have to setup firewalls to block spammers from using your system to send junk mail.
It's starting to really get ridiculous. Something needs to be done about the junk mail problem. I just can't take it anymore.
My email server processes 1000's of junk email messages each day. Last I checked it was 15,000 a month, but junk mail is up 80% since then. I have to dedicate massive system resources to my mail server just to cut through all the junk. I spend hours configuring filters and blocking software each month.
Then on top of all that, they start smashing my web servers with junk mail. My forums are filling up with junk. My blog comments are getting junked. They are even hitting the contact forms on my web sites to send junk mail. Yesterday I found my web server spewing 1000's of junk emails all over the net because some low life wants to make a quick buck.
I wrote a script yesterday that adds blackhole routing to IP addresses found in my log files from systems trying to find email addresses to spam. It's up to 4550 blocked IP's so far. It's only been 24 hours. 4550 spam attempts in 24 hours. The only reason why it's not more is because I'm blocking the IP's on the first attempt. It has slowed from 1 per second to about 1 ever 20 seconds.
I'm about ready to just tell everyone to get a Yahoo/GMail/Hotmail/or some other email account and turn the mail servers off. It's costing me too much money to keep the mail server running.