Note: There currently aren't a lot of frequently asked questions on dsync, but in preparation of publishing the new multiserver guide, I want to be one step ahead. Some commands that are good to know: To view the status of replication: Code: doveadm replicator status To show the users that are replicated: Code: doveadm replicator status '*' Do a manual sync: Code: doveadm sync -A tcp:mx1.example.com Initiate a replication of one mailbox manually: Code: doveadm sync -u [email protected] tcp:mx1.example.com If your system is not syncing, make sure: - The correct settings (noted in the perfect multiserver guide) for Dovecot are placed in /etc/dovecot/conf.d/99-ispconfig-custom-config.conf and in /usr/local/ispconfig/server/conf-custom/install/dovecot_custom.conf.master. - Both servers have a valid SSL certificate for the hostname. - The doveadm_password (set in the earlier mentioned config file) is the same on both servers. - The servers can reach each other and the doveadm_port is opened in the firewall of both servers (but only for traffic from each other - don't open this port publicly).