> How to re-use the tags added by relay2?
You can't do exactly what you want with that setup, but you can do something
that is "good enough" in most cases.
Using something like procmail on relay2, look to see if the mail has
X-Spam-Status: Yes in it, or one of the other signs that the first SA pass
has marked the message as spam. If it is marked as spam, bypass the SA scan
on the second machine.
If the message was marked as ham by the first SA pass, or not scanned at
all, scan it with SA on the second relay machine. This will prevent a
spammer putting X-Spam-Status: No in their fake headers and bypassing your
second scan.
Loren
