Dovecot (doveadm, ssl, sync) - SSL error

[Arkadiusz Majewski]

Hello!

I've got a problem to run syncing between both dovecot services on the
separate servers.
The error indicates to the problem with SSL.

Directly using openssl command to connect from one server to other and vice
versa is passed without any errors.

 

OS: FreeBSD 11.1-RELEASE-p4

Dovecot: 2.2.33.2_2 and the older one dovecot-2.2.32.1_1 (or similar) -
build by ports.

OpenSSL: 1.0.2k-freebsd 26 Jan 2017

 

dovecot: doveadm(10.18.1.15): Error: doveadm client disconnected before
handshake: SSL_accept() failed: error:140760FC:SSL
routines:SSL23_GET_CLIENT_HELLO:unknown protocol

 

dovecot.conf (on both servers):

 

mail_plugins = $mail_plugins notify replication

 

service replicator {

  process_min_avail = 1

}

 

service aggregator {

  fifo_listener replication-notify-fifo {

    user = dovecot

  }

  unix_listener replication-notify {

    user = dovecot

  }

}

 

service replicator {

  unix_listener replicator-doveadm {

    mode = 0600

  }

}

 

replication_max_conns = 10

 

service doveadm {

  inet_listener {

    port = 12130

        ssl = yes

  }

}

 

ssl = required
ssl_protocols = SSLv3 TLSv1 TLSv1.1 TLSv1.2
ssl_cert = </usr/local/etc/dovecot/ssl/cert.crt
ssl_key = </usr/local/etc/dovecot/ssl/cert.key
ssl_client_ca_file = </usr/local/etc/dovecot/ssl/ca.pem
ssl_client_ca_dir = /usr/local/etc/dovecot/ssl

 

 

Thank you in advance for any help.

 

Kind Regards,

Arkadiusz Majewski