We have 3 servers. mailstore-01, mailstore-02 and proxy
We would like to point our mx away from mailstore-01 and point it to proxy.
As we migrate our mx records (more than 100) will these message be scanned by amavis, clam and spamassassin twice, once by proxy and once on the mailstore or only on the initial smtp delivery to the proxy?
From what I have read the proxy will hand off as lmtp to mailstore-01 & mailstore-02 and ltmp does not pass through amavis et al?