Hi everyone, I have deployed a mixed distro ISPConfig 3 multi-server setup with servers in the Netherlands (CentOS+Apache+Dovecot according to the howto) and the UK (Debian+nginx+dovecot), the UK clients do offer all functions, (mail, web sites dbs...) and ispuk2 -- is copy of -- ispuk1; I'm using this setup for email server redundancy and failover with /var/vmail mounted over the network to keep mailboxes in sync. Synptoms are: in the netherlands machines I have isp2 and isp4 as email servers setup as I mentioned above and it works flawlesly but Since last week after I created an email domain in the ispuk1 server let's say example.com and created a mialbox email@example.com and make my MX records point to ispuk1 and ispuk both with Priority 10; ispuk1 receives the email just fine, but when it falls back to ispuk2 I get "Relay access denied" or "example.com loops back to myself" My best guess is that the dbispconfig database is not syncing, even though I tried the Tools > Resync option with no luck. Possible solution: I'm thinking of trying any of the following: 1. Copy the mysql_virtual_*.cf postfix files from ispuk1 to ispuk2 anc change them accordingly 2. Copy the dbispconfig DB from ispuk1 to ispuk2 and see if it fixes the problem. What I don't want is to screw up the system as it's a production *working* heavy load environment. If I'm doing anything wrong can you please point me in the right direction, or share a link if I made a mistake and this has already been answered. Thanks in advance.