Environment Red Hat Enterprise Linux 5, 6, and 7 Postfix Dovecot Issue How to disable SSL 3.0 and other weak protocols in Postfix and Dovecot Dovecot Red Hat Enterprise Linux 7 (dovecot-2.2.x) To disable SSL 3.0 and SSL 2.0 in Dovecot on Red Hat Enterprise Linux 7, add the following line to the /etc/dovecot/conf.d/10-ssl.conf file ssl_protocols = !SSLv2 !SSLv3 You must restart (not only reload) th