On Tue, 2004-09-14 at 14:42 +0100, Sean Hoggard wrote: > Thanks for the advice, I did wonder if this might be the case, I'm
> afraid I do need to bounce messages though, my spam filter sometimes
> identifies mails as spam when they are genuine, in this case the
> sender needs to know there is a problem.
No. You _REJECT_. If it's a valid sender, that causes the sending
mailhost to generate a bounce. You don't accept the mail and then
generate a bounce yourself.
The difference is that the majority of such mail will come directly from
spammers and virus-infected hosts, which _won't_ generate a bounce to
the (faked) sender when you refuse to accept the mail.]
If you just reject it at SMTP time, then legitimate senders do get
bounces.