Milter-greylist

"egcrosser" <egcrosser@...> wrote:

> Manu and guys,
> Sorry, I feel that I am too chatty today.  I promice to stop after
> this message ;-)
>
> I've got another idea how to measure rating of the peer, this time
> completely within existing infrastructure.  The idea is this:
>
> if a greylisted submission was *not* retried by the peer within, say,
> 12 hours, the peer is likely no good!  Good guys always retry after 
> 4xx.
>

Unfortunatly, good guys sometimes get hit by bad guys.
When checking the logs, I find more then one site, that
resends a perfectly legitimate message after more then 2 days.
My guess is that they have been struck by a very long mail queue,
due to spam with bad addresses and bad return address,
which their MTA cannot handle in a good way.

(This has happend to us, with sendmail never going through the whole
queue, because load gets to high:-( . I had to make arrangements for the
queue to be processed regularly, despite the load. Nowadays the queue
is managable due to the greylist milter.)



/klas