Dovecot problem after config haproxy

i configured the ha proxy for 2 postfix server that worked well before config haproxy. after set email account in outlook sent and received test pass but i couldn’t send or receive email.
i check the mail log and have this error :

dovecot[5736]: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=, lip=, session=
i search and found i have problem with ssl certificate.

i use this link for configuration

please help me