Hello everyone, So master leg of this dual server setup failed. Databases where not synced. Because of hacked website, ISP put server1 into forced rescue mode : no way to change boot mode. I had no other solution than to re-install (a lot of websites and emails). Lazyly I choose standalone server. Bad thing is that I inserted a v3.1.15p2 database into v3.2.3 Now I can't send / receive emails. Code: Mar 23 16:59:01 server11 postfix/smtpd: NOQUEUE: reject: RCPT from ns502483.ip-192-99-xx.net[192.99.xx.92]: 451 4.3.0 <[email protected]>: Temporary lookup failure; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<ip204.ip-192-xx-188.net> Amavis is well lauched. I spent nearly 24H to make to server running again, I can't afford anymore downtime. Is there some commands I may launch to make emails going ? PS : There are no troubles to dig any domain. I'm 99% sure it is a change between v3.1.15p2 and v3.2.3 involved.