Milter-greylist

nicolapedrozzi wrote:
> Hello everybody,
> I just installed milter-greylist (easy, thanks for the good doc).
> 
> But, I have a problem (I think):
> 
> The MX record for my server, say myserver.org is handled by the MTA of
> my ISP, say myisp.org.
> 
> The ISP MTA cleans-up viruses and some spam but NOT all, so I decided
> to implement Greylisting. My ISP is not planning to implement it.
> 
> So, the problem is that I need to tell milter-greylist that I receive
> mail mostly from that 'peer' and therefore send 'delayed messages' to
> the real IP of the sender.

  Your ISP has already accepted delivery of the messages, you are now
stuck with them.  Your implementing greylisting just delays delivery
of the messages between your ISP and you, the chance to delay them
as they arrived from possible spam sources has been lost.