exim4 + dovecot mail work from internet! I cant connect to server from my PC same LAN as server.
if in Thunderbird type mail.server.com then connection time out
or another error
Oct 25 23:39:25 imap-login: Info: Disconnected (no auth attempts in 0 secs): user=<>, rip=192.168.3.12, lip=192.168.3.11, TLS handshaking: SSL_accept() failed: error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate: SSL alert number 42, session=