The problem is that there are too many and the spammers keep finding ways to evade the blocklists. And the open proxies and trojanized machines owners are generally glad to know that they have a problem and will fix it so reporting does still help. However, Comcast has lots of trojanized machines and if you have correspondents on Comcast, you won't get their emails and they won't get an undeliverable message - the blocklist needs to reject at the server level or tag the email so you can see if there are false positives). If it is in China and you have no Chinese correspondents, that's ok. Using a filter of your own is not as effective because if you block an IP address, then you get no email from that address. Those IP addresses are more or less perpetually on the blocklist so to get advantage of reporting, one needs to use the blocklist (I think you can in Mailwasher. There are some countries (for instance China and Korea) where many of the ISPs do not seem to care that the spammers are operating. The spammers then resorted to using ISPs in other countries and open proxies and trojanized machines. In the beginning, it was helpful, but as ISPs realized that allowing spammers to operate resulted in blacklisting, they started to implement preventative measures so there is very little spam coming from responsible ISPs. The object of reporting is to tell ISPs that there is a spammer operating. I was always under the impression that my reporting the spam would actually help in getting rid of some of the spammers. Has something been changed in the reporting or are the ISPs ignoring these reports? I've never known an ISP whose standard TOA didn't specifically and strictly prohibit UCE. I report every single spam I receive in the hopes that someone will actually read the reprts generated by spamcop. I have noticed lately that I keep getting spam from the same addresses, according to Mailwasher's blacklist. It also will create a blacklist of email address to automatically mark as a spammer address as you mark, delete and bounce these spam messages. For those who may not be familar with Mailwasher, it will allow you to delete the spam from your mail server and, if desired, will send a bounced message to the spammer's return address (even though most spammers use bogus addresses). I started using Mailwasher about a year ago. I've been using Spamcop for a couple of years.
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