I would like to setup an intermediate "spam rejecting" server in order to
remove the load from my final delivery (pop) box. I had envisioned using a
fisrt-line server to accept the mail, do the appropriate blocking with dnsbl
as I'm doing now, then pass along to the final server that delivers it to
the user's pop boxes.
Can someone tell me how I should set this up? I assume I'd need to make the
1st box a lower number (higher priority) in it's DNS MX record.
In this configuration, I assume all the mail would go the the higher
priority (first) box unless it was unavailable, then it's roll over to going
directly to the primary.
I need to know how to prevent local delivery on this first box.
Thanks very much in advance for the time to help.