> [snip]About spam, > people should be more carefull where they enter their email adresses and > also list administrators could make list more secure (at least to > prevent listing the list to see who is subscribed). This and only this > is the problem of spam.
I strongly disagree here. Spammers are actively scanning every domain for valid email addresses. Even if you have an email address that nobody knows about, it will eventually get bombed with spam. Just watch the logs closely on any busy email server, and you will see one dictionary attack after the next. Blaming spam on the end user receiving it is simply wrong. I agree some people unwisely bring extra spam on themselves by posting all over the place using their email address, but spammers will find their email address even if they do not do that. There is technology already available to us to filter much of the spam. To filter the majority fo all spam, you need to use a mixture of methods. One very good idea is to block every known open relay, since spammers still rely heavily on those open relays. The ORDB RBL is a list of all known open relays, and it definitely blocks a lot of spam. SpamAssassin also helps noticably. With SpamAssassin, you really need to train the engine on ham and spam periodically to make sure it catches a high amount. Spammers will constantly change their patterns to trick SpamAssassin, so manually teaching it the spam it misses is a critical function. And of course, you should require all of your own users to use SMTP AUTH to relay email. This way all email relayed through your box will contain an X-Auth header, so you can quickly track down the user if one of your users is sending spam. To decrease a large amount of incoming spam, we need a solution to stop from address forging. The proposals like RMX would definitely help reduce a significant amount of spam. Any solution that noticably cuts down on address forging will also noticably cut down on spam, since most spam is sent with forged addresses. - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]