SMTPTLS port 587 Close after fresh Install

[franmm25]

I make this changes

=================
Dovecot (dovecot.cnf)
=================
# SSL configuration - Begin
#ssl = yes
ssl_cert = </etc/letsencrypt/live/test.com/fullchain.pem
ssl_key = </etc/letsencrypt/live/test.com/privkey.pem
# Disable SSLV3 - Poodle
ssl_protocols = !SSLv2 !SSLv3
# SSL configuration - End

=================
Postfix (main.cf)
=================

smtp_use_tls = yes
smtpd_use_tls = yes
smtp_tls_note_starttls_offer = yes

smtpd_tls_security_level = may
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
tls_random_source = dev:/dev/urandom
smtp_tls_session_cache_database = btree:$data_directory/smtp_tls_session_cache

smtpd_tls_cert_file = /etc/letsencrypt/live/test.com/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/test.com/privkey.pem


But continue with the port 587 closed, restar the services without problem, but i don´t know if its necessary more changes, regards