diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index 769fdca..a5e12a4 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -1027,6 +1027,8 @@ fi
 
 ## - edit /usr/local/dovecot/etc/dovecot/conf.d/10-ssl.conf
 ## -
+## -    ssl = required
+## -
 ## -    ssl_cert = <$server_cert
 ## -    ssl_key = <$server_key
 ## -
@@ -1052,7 +1054,9 @@ fi
 ## -
 _failed=false
 echononl "\tAdjusting file 10-ssl.conf.."
-perl -i.ORIG -n -p -e "s#^([ ]*)(ssl_cert\ ?=.*)#\1\#\# \2\n\1ssl_cert = <$server_cert#g" \
+perl -i.ORIG -n -p -e "s#^([ ]*)(ssl\ ?=.*)#\1\#\# \2\n\1ssl = required#g" \
+   /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true
+perl -i -n -p -e "s#^([ ]*)(ssl_cert\ ?=.*)#\1\#\# \2\n\1ssl_cert = <$server_cert#g" \
    /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true
 perl -i -n -p -e "s#^([ ]*)(ssl_key\ ?=.*)#\1\#\# \2\n\1ssl_key = <$server_key#g" \
    /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true