Anyone using zen.spamhaus.org?

[Alex Neuman van der Hans]

Chris Sweeney wrote:
> I use a shared database on all my MX machines that share the greylist
> data.  Once a site has gone through the process its allowed to pass
> future mails without the delay.  The list stays valid for a week, so
> users who get mail regularly from the same places will not be affected
> by the delay and it still does it job of stopping zombie machines.  It
> also still allows the mail to be received after the set delay period no
> matter what MX the mail goes to.
> 
I've got the whitelisting set up as high as 30 days. As you said, the 
first e-mail might not get through immediately but all the others do.