I don't get much spam, usually. Through a combination of SpamAssassin on my email server and SpamSieve on my Mac, more or less everything stupid ends up deleted before it comes to me or stashed in my Junk folders in my various email programs.
Yesterday, however, some spammer somewhere decided he was going to send out spam emails using my domain name (the-word-is-not-enough.com). The spams aren't going out from my server - they're probably emanating from some botnet somewhere – but because there are now so many firewalls, invalid email addresses, authentication systems et al, I'm getting a load of messages as bouncebacks.
And when I say a load, I mean 3,800 in the last 24 hours.
Fortunately, I'm on fast broadband, have unlimited email storage (more or less) and have trained SpamSieve to simply junk the bouncebacks, rather than fill up my email inbox, so it's not a huge problem. But it does mean that I'm not going to be able to even think about picking up emails remotely with my mobile phone or webmail any more until the spammer gets bored and moves on to another domain.
I could set up a load of rules on the server to filter the messages out, assuming I could find some sensible definitions that won't stop me from getting any bounceback messages at all from any emails I send out.
But at the moment, I'm cheesed off!
UPDATE: Turns out setting out the rules was relatively simple, thanks to SpamSieve: all I did was check its log to see what things it was picking up on to exclude the bouncebacks, picked the guaranteed indicators of spaminess (a couple of IP addresses in Germany and a certain make of Outlook Express), then set up the corresponding rules on the server. Now, almost everything's getting deleted before it comes to me. Fingers crossed I haven't done something stupid that stops all mail inadvertently.