> If there can be some delay between receipt and replication, something like > rsync will work fine, although it will propagate users' mistakes. If you > need the message delivered to both stores at roughly the same time, the > virtual_alias_maps solution would work, or you can e.g. have your delivery > agent copy each message to the backup store.
If relayhost support multiple IP or serevrs, it could be a better option. relayhost = [first_IP, second_ip] What do you think? Tom
