I can certainly understand (Note: Anyone who thinks "understand" = "condone" needs to go learn what those words mean.) why SpamCop doesn't belive anyone who says "That wasn't spam." *Every* spammer says that, and SpamCop is well aware of the first two rules of dealing with spammers.

1) Spammers lie.

2) See Rule #1.

However, they've cleary got a problem when one accusation shuts down access to multiple networks. Then again, see rule #1.

To be honest, I'm about that close to giving up, myself. My filters have gone from strong to massacre-level evil, and I frankly don't care if some real email gets caught -- frex, my "text/html: die" and "multipart/alternative: die" and "entirely base64: die." rules. I used to check the logs, I whitelist a few, and ignore a few more. Lately, I don't bother with that, as I've watched the log file that gets mailed to me every night continue to double in size about every four months.

I've fought the spam-wars for years. I'm beaten, bloody and bowed. Technical solutions don't work -- and don't solve the bandwidth clogging problem (one doesn't solve traffic problems by stopping the cars when they get off the highway.) Economic or Legal are the only answer, and given the current climate, I'm not sure they'll ever happen.

I think I've got about three, four months before I bag it entirely and either go to a preapproved, white-list only email system, or just give up on email entirely.