> 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.
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~). > (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). jcn50/mailing. -- ## 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/
