Michael W Cocke wrote: > Does anyone have a rule to chech the envelope To: against the header > to: ? I'm sure that there's a reason why it's allowed to be different, > but it doesn't apply here, and almost half of the spam that gets thru > everything else would get stopped by that.
No. It's generally not possible, as SA does not have access to the envelope. Also, bear in mind that there are LOTS of reasons why it would be allowed to be different, and your location is not likely to be an exception, despite what you think. For example, all posts sent to any mailing list, including this mailing list, will mismatch. Unless your site does ALL of the following, you'll have mismatches: -No users subscribe to ANY mailing lists, including listservs as well as commercial newsletters, etc. -No users receive mail from anyone that uses bcc. -No users may have mail redirected from another account (ie: auto-forward from yahoo) (need I go on?) In general the only systems that won't get mismatches between the envelope and the to: are systems that don't receive any internet mail except single-user to single-user messages. And that's got to be strict, NO other internet email but single-user to single-user.
