diff --git a/install_update_dovecot.sh b/install_update_dovecot.sh
index a78aa27..8a70321 100755
--- a/install_update_dovecot.sh
+++ b/install_update_dovecot.sh
@@ -1488,9 +1488,12 @@ fi
 ## -    ssl_cert = <$server_cert
 ## -    ssl_key = <$server_key
 ## -
-## -    ssl_dh_parameters_length = 2048
+## -    # - 'ssl_dh_parameters_length' is obsolete and no longer needed
+## -    #ssl_dh_parameters_length = 2048
 ## -
-## -    ssl_protocols = !SSLv3
+## -    # - 'ssl_protocols has been' replaced by ssl_min_protocol
+## -    #ssl_protocols = !SSLv3
+## -    ssl_min_protocol = TLSv1.2
 ## -
 ## -    ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA
 ## -
@@ -1535,12 +1538,20 @@ else
       /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true
 fi
 
-perl -i -n -p -e "s#^([ ]*)\#?(ssl_protocols\ ?=.*)#\1\#\# \2\nssl_protocols = !SSLv3#g" \
+perl -i -n -p -e "s#^([ ]*)\#?(ssl_min_protocol\ ?=.*)#\1\#\# \2\nssl_min_protocol = TLSv1.2#g" \
    /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true
 
-perl -i -n -p -e "s#^([ ]*)\#?(ssl_cipher_list\ ?=.*)#\1\#\# \2\nssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA#g" \
+# - Replace only the first occurence of the match
+# -
+# - Example:
+# -    # Replace first occurence of 'width: .*' in file 'filename.css'
+# -
+# -    perl -pi -e '$a=1 if(!$a && s/(width:).*;/$1 100%;/);' filename.css
+# -
+perl -i -n -p -e '$a=1 if(!$a && s#^([ ]*)\#?(ssl_cipher_list\ ?=.*)#\1\#\# \2\nssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA#);' \
    /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true
 
+
 perl -i -n -p -e "s#^([ ]*)\#?(ssl_prefer_server_ciphers\ ?=.*)#\1\#\# \2\nssl_prefer_server_ciphers = yes#g" \
    /usr/local/dovecot-${_version}/etc/dovecot/conf.d/10-ssl.conf || _failed=true