Doh - reply-to caught me out... I wrote:
On 13/02/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Kjetil wrote: > > I've just been analysing our logs from a greylisting experiment, and it > > turns out quite a few servers will give up delivery after 3 hours. so > > if you can guarantee the server never will be down for more than 2 > > hours, you won't lose mail. we don't keep postmasters on 24/7, so this > > could very well happen, although we hope it never will due to the > > redundancy in our setup. a backup MX isn't that hard to set up, anyway. Since that was a greylisting experiment, it does't simulate a MX-unreachable event, so I doubt that the behaviour observed can be extrapolated. > Thank you for this analysis. > A power failure (or whatever) could easily turn off servers for more than > 3 hours (on week-ends, near midnight~). Time for a better hosting company? > > (I don't see why the OP doesn't simply turn on spam filtering on the > > backup MX.) > > I did turn on a spam filtering feature, but as I said before: the primary > MX is a shared web hosting machine, which I can't control (thus I am not > able to know which anti-spam filters are set on the other side). > Then make the current 'secondary' MX into the primary MX, install the spam filtering that *you* need and *you* control. Reject unwanted mail inline, deliver known-wanted mail to the current 'primary', treating it as a simple backend mailstore. Peter -- Peter Bowyer Email: [EMAIL PROTECTED] -- Peter Bowyer Email: [EMAIL PROTECTED] -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
