I have had a lot of fun over the years "scam baiting." Basically what we do is lead these scammers on and get them to either jump through hoops or do things that cost them real money. These guys inevitably need a bank account to receive money and often want to talk on the phone so they need a calling card. Most of them have to pay for internet access as well so the longer you string them along the more they pay.
I DO NOT RECOMMEND ANYONE TRY BAITING unless you know a lot about what you are doing and how to keep your cover. My cover identity bears no resemblance to what I use elsewhere online. There are people with very sophisticated phone systems and so forth set up that are very convincing, all in the name of doing something good.
But after doing this for years I'll offer some suggestions and comments on what has been said in this thread.
At this point (as others have said) you need a new address. Spam filters will help, and as others said, they spammers constantly change the send address, filtering that will provide almost no relief.
You do need a new address. A lot of people disparage "free" addresses like google or yahoo. I wouldn't have anything else. "Real" addresses are easily spoofed and once you have them you try not to change them. Basically, get a yahoo or google address and change it every few months if you really want to avoid spam.
I've mentioned this before, and I didn't believe it at first, but it is true and it helps:
Just opening an email can verify to the sender that you are a valid email address and a 'real live' person. With that information, I think your email address becomes 'hot property' and gets sold to a gadzillion other spammers.
What to do: Disable any sort of 'automatic preview' of images in emails.
How this works: The bad guys send a billion emails out with embedded images. Those images are displayed by linking to the image on their web server. Every email gets a different randomly generated number attached to that image, and they keep a database of image #'s versus email addresses. So when their site gets a request from that number, they know you actually opened the email. You have just become a target. Did you see the laser beam on your forehead?
So disable previewing. Now.
What you said is absolutely true. But it does not even take previewing these days. It is possible to tell if an email has reached the addressee and not been opened. That means a scammer can tell if an address is valid even if you don't open it.
The "no preview" advice though is good to avoid some viruses and such though.
Oh, the other thing - do people forward you jokes, or political 'hot-button' stuff, or heart-rendering stories, and such and they get forwarded? Unless they did a 'blind CC'; your email address is on that list. Spammers intercept them along the way, and there you are.
If anyone forwards me one of those, 'IMPORTANT: forward to everyone you know', they get an earful from me, and I make 'em clean the cobwebs out of my attic and scrub my septic tank until it shines, while I pour molasses and red ants on them, stick ear-buds in 'em playing 'Honey' by Bobby Goldsboro non-stop. Haven't gotten one in years.
It doesn't make any difference that YOU didn't forward it - other people are forwarding it and it has your address on it. That's all it takes.
-ERD50
Also good advice. But scammers can fairly easily intercept emails being sent on a grand scale to harvest email addresses. Forwarding a joke is just the tip of the iceberg. If you check your mail at a wifi site or have wifi at home you could be vulnerable even if your passwords are encrypted.
But the biggest source of spam is from things you sign or sign up for online. Any newsletter, comment you make, etc. exposes you. Most forums like this are safe because your email address is not exposed. But a surprising number of blog sites and so forth are weak and allow the email address out.
Just like fishing, baiting means laying something out there for the scammers to latch onto. This usually means posting using a new email address to various forums and waiting a few days for the lure to be taken. So, as you can imagine, an innocent comment on a similar blog could easily make you a target.
Ignoring these is best. I would not even bother sending them to a spam folder because the email address is unlikely to be used again. These guys change on a weekly basis if not more often. Beside being annoying they aren't very serious if you don't open them or any attachments. And, ALWAYS have up-to-date anti-virus software running!