Hi, I setup ISPConfig3 as cluster on 2 servers with Failover IP. To synchronization mails I use dovecote sync. Problem is that, when I switch IP to backup server then all clients download again mails and have duplicate. All using POP protocol. Anyone known solution of this problem Thanks Dariusz
use the replication with the server-ips and not with the failover-ip and make sure, that you add the replication to the service pop
replication use server IP, but domain pop3.example.com use failover-ip, when thunderbird connect to backup server than get old mails as new. but i see that most account have fast_sync time more than 22:40:00, maybe too long sync interval is set. replication_full_sync_interval = 1 hours
