Re: CBV
Tony Finch <[email protected]>
| Newsgroups | gmane.mail.spam.srs.general |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 30 Apr 2004, Mark Shewmaker wrote: > On Fri, 2004-04-30 at 05:26, Tony Finch wrote: > > On Thu, 29 Apr 2004, Mark Shewmaker wrote: > > > > > > Could the SES address contain a truncated body checksum? > > > > No, that makes it impossible for CBV to work. > > Why? How can the SMTP server validate the address if it doesn't have all the information it needs? If the address includes a body checksum it can't be validated until after the message body is seen, and the body is never transmitted during CBV. Note also that bounces often omit the body, so this kind of address can't protect against collateral spam. -- Tony Finch <[email protected]> http://dotat.at/