Newer Dovecot won't start with SSLv2 in config

roles/mailserver/templates/etc_dovecot_conf.d_10-ssl.conf.j2

 #ssl_parameters_regenerate = 168
 
 # SSL protocols to use
-ssl_protocols = !SSLv2 !SSLv3
+ssl_protocols = !SSLv3
 
 # SSL ciphers to use
 #ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL