=========================================
My old server dovecot.conf (production1):
=========================================

disable_plaintext_auth = no

listen = *
log_path = /var/log/dovecot.log
mail_location = maildir:/z1dev/mail/virtual/%d/%n/Maildir/
passdb {
        args = /etc/dovecot/passwd
        driver = passwd-file
        master = yes
        pass = yes
        }
pop3_uidl_format = %g
protocols = pop3 imap
ssl = yes
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem

userdb {
        args = uid=vmail gid=vmail home=/z1dev/mail/virtual/%d/%n
        driver = static
        }
mail_debug = no
verbose_ssl = no

=========================================
My New server dovecot.conf(production2):
=========================================

disable_plaintext_auth = no

listen = *
log_path = /var/log/dovecot.log

mail_location = maildir:/z1devenv/mail/virtual/%d/%n/Maildir/

passdb {
        args = /etc/dovecot/passwd
        driver = passwd-file
        }

pop3_uidl_format = %g
protocols = pop3 imap

ssl = yes
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem

userdb {
        args = uid=vmail gid=vmail home=/z1devenv/mail/virtual/%d/%n
        driver = static
        }

mail_debug = yes
verbose_ssl = no


# Enable the replication plugin globally
mail_plugins = $mail_plugins notify replication

service replicator {
  process_min_avail = 1
}

dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u
plugin {
  mail_replica = remote:vmail@production3.baplc.com
}

service aggregator {
  fifo_listener replication-notify-fifo {
    user = vmail
  }
  unix_listener replication-notify {
    user = vmail
  }
}

service replicator {
  unix_listener replicator-doveadm {
    mode = 0600
    user = vmail
  }
}

replication_max_conns = 10

imapc_host = production1.baplc.com
imapc_password = vmail
imapc_master_user = vmail
imapc_user = %u

===================================