On Wed, Jul 10, 2002 at 11:22:32AM -0400, Dean Anderson wrote: > Not all RBLs, just open relay RBLs. If you use Open relay rbls, then you > are blocking based on the connection address. This is wrong. You should be > filtering against the IP addresses in the headers of the message. If you > filter this way, the relay used by the spam is irrelevant. It doesn't > matter if the relay is open or closed.
Well, no, actually that's exactly the address you want to block -- the open relay. The goal is to block the message from entering your system by filtering at the SMTP level. If it gets in, then you can do content filtering and check the headers (and various other things). (Ok, you *can* do content filtering at the SMTP level, but it typically requires a lot more work than simple filtering at SMTP then content filtering at delivery...) > filters at all. Even then, they mostly just get a "feel good". Much the > "blocked spam" is originated by the open relay people. You need to stop generalizing -- not all open relay lists are bad. If you had a problem with some of them, then those lists may be bad, but they're definately not all bad. -- Theo Van Dinter, [EMAIL PROTECTED][EMAIL PROTECTED] Consultant, Collective Technologies (www.collectivetech.com) Systems Administrator, bblisa.org/kluge.net --- Send mail for the `bblisa' mailing list to `[EMAIL PROTECTED]'. Mail administrative requests to `[EMAIL PROTECTED]'.
