diff --git a/dnsapi/dns_one.sh b/dnsapi/dns_one.sh
index 0fdc3d5..96ef596 100644
--- a/dnsapi/dns_one.sh
+++ b/dnsapi/dns_one.sh
@@ -5,8 +5,11 @@
 # Author: github: @diseq
 # Created: 2019-02-17
 # Fixed by: @der-berni
-# Modified: 2019-05-31
-#
+# Modified: 2020-04-07
+#     
+#     Use ONECOM_KeepCnameProxy to keep the CNAME DNS record
+#     export ONECOM_KeepCnameProxy="1"
+#     
 #     export ONECOM_User="username"
 #     export ONECOM_Password="password"
 #
@@ -30,32 +33,45 @@ dns_one_add() {
     return 1
   fi
 
-  mysubdomain=$_sub_domain
-  mydomain=$_domain
-  _debug mysubdomain "$mysubdomain"
-  _debug mydomain "$mydomain"
+  subdomain="${_sub_domain}"
+  maindomain=${_domain}
 
-  # get entries
-  response="$(_get "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records")"
-  _debug response "$response"
+  useProxy=0
+  if [ "${_sub_domain}" = "_acme-challenge" ]; then
+    subdomain="proxy${_sub_domain}"
+    useProxy=1
+  fi
 
-  # Update the IP address for domain entry
-  postdata="{\"type\":\"dns_custom_records\",\"attributes\":{\"priority\":0,\"ttl\":600,\"type\":\"TXT\",\"prefix\":\"$mysubdomain\",\"content\":\"$txtvalue\"}}"
-  _debug postdata "$postdata"
-  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records" "" "POST" "application/json")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
+  _debug subdomain "$subdomain"
+  _debug maindomain "$maindomain"
+
+  if [ $useProxy -eq 1 ]; then
+    #Check if the CNAME exists
+    _dns_one_getrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
+    if [ -z "$id" ]; then
+      _info "$(__red "Add CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+      _dns_one_addrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
 
-  id=$(echo "$response" | sed -n "s/{\"result\":{\"data\":{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$mysubdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}}},\"metadata\":null}/\1/p")
+      _info "Not valid yet, let's wait 1 hour to take effect."
+      _sleep 3600
+    fi
+  fi
 
+  #Check if the TXT exists
+  _dns_one_getrecord "TXT" "$subdomain" "$txtvalue"
+  if [ -n "$id" ]; then
+    _info "$(__green "Txt record with the same value found. Skip adding.")"
+    return 0
+  fi
+
+  _dns_one_addrecord "TXT" "$subdomain" "$txtvalue"
   if [ -z "$id" ]; then
-    _err "Add txt record error."
+    _err "Add TXT record error."
     return 1
   else
-    _info "Added, OK ($id)"
+    _info "$(__green "Added, OK ($id)")"
     return 0
   fi
-
 }
 
 dns_one_rm() {
@@ -73,36 +89,45 @@ dns_one_rm() {
     return 1
   fi
 
-  mysubdomain=$_sub_domain
-  mydomain=$_domain
-  _debug mysubdomain "$mysubdomain"
-  _debug mydomain "$mydomain"
+  subdomain="${_sub_domain}"
+  maindomain=${_domain}
 
-  # get entries
-  response="$(_get "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
+  useProxy=0
+  if [ "${_sub_domain}" = "_acme-challenge" ]; then
+    subdomain="proxy${_sub_domain}"
+    useProxy=1
+  fi
 
-  id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$mysubdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  _debug subdomain "$subdomain"
+  _debug maindomain "$maindomain"
+  if [ $useProxy -eq 1 ]; then
+    if [ "$ONECOM_KeepCnameProxy" = "1" ]; then
+      _info "$(__red "Keeping CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+    else
+      #Check if the CNAME exists
+      _dns_one_getrecord "CNAME" "$_sub_domain" "$subdomain.$maindomain"
+      if [ -n "$id" ]; then
+        _info "$(__red "Removing CNAME Proxy record: '$(__green "\"$_sub_domain\" => \"$subdomain.$maindomain\"")'")"
+        _dns_one_delrecord "$id"
+      fi
+    fi
+  fi
 
+  #Check if the TXT exists
+  _dns_one_getrecord "TXT" "$subdomain" "$txtvalue"
   if [ -z "$id" ]; then
     _err "Txt record not found."
     return 1
   fi
 
   # delete entry
-  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$mydomain/dns/custom_records/$id" "" "DELETE" "application/json")"
-  response="$(echo "$response" | _normalizeJson)"
-  _debug response "$response"
-
-  if [ "$response" = '{"result":null,"metadata":null}' ]; then
-    _info "Removed, OK"
+  if _dns_one_delrecord "$id"; then
+    _info "$(__green Removed, OK)"
     return 0
   else
     _err "Removing txt record error."
     return 1
   fi
-
 }
 
 #_acme-challenge.www.domain.com
@@ -138,6 +163,8 @@ _get_root() {
 _dns_one_login() {
 
   # get credentials
+  ONECOM_KeepCnameProxy="${ONECOM_KeepCnameProxy:-$(_readaccountconf_mutable ONECOM_KeepCnameProxy)}"
+  ONECOM_KeepCnameProxy="${ONECOM_KeepCnameProxy:-0}"
   ONECOM_User="${ONECOM_User:-$(_readaccountconf_mutable ONECOM_User)}"
   ONECOM_Password="${ONECOM_Password:-$(_readaccountconf_mutable ONECOM_Password)}"
   if [ -z "$ONECOM_User" ] || [ -z "$ONECOM_Password" ]; then
@@ -149,6 +176,7 @@ _dns_one_login() {
   fi
 
   #save the api key and email to the account conf file.
+  _saveaccountconf_mutable ONECOM_KeepCnameProxy "$ONECOM_KeepCnameProxy"
   _saveaccountconf_mutable ONECOM_User "$ONECOM_User"
   _saveaccountconf_mutable ONECOM_Password "$ONECOM_Password"
 
@@ -177,3 +205,75 @@ _dns_one_login() {
 
   return 0
 }
+
+_dns_one_getrecord() {
+  type="$1"
+  name="$2"
+  value="$3"
+  if [ -z "$type" ]; then
+    type="TXT"
+  fi
+  if [ -z "$name" ]; then
+    _err "Record name is empty."
+    return 1
+  fi
+
+  response="$(_get "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  if [ -z "${value}" ]; then
+    id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"[^\"]*\",\"priority\":0,\"ttl\":600}.*/\1/p")
+    response=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"[^\"]*\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"\([^\"]*\)\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  else
+    id=$(printf -- "%s" "$response" | sed -n "s/.*{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"${name}\",\"type\":\"${type}\",\"content\":\"${value}\",\"priority\":0,\"ttl\":600}.*/\1/p")
+  fi
+  if [ -z "$id" ]; then
+    return 1
+  fi
+  return 0
+}
+
+_dns_one_addrecord() {
+  type="$1"
+  name="$2"
+  value="$3"
+  if [ -z "$type" ]; then
+    type="TXT"
+  fi
+  if [ -z "$name" ]; then
+    _err "Record name is empty."
+    return 1
+  fi
+
+  postdata="{\"type\":\"dns_custom_records\",\"attributes\":{\"priority\":0,\"ttl\":600,\"type\":\"${type}\",\"prefix\":\"${name}\",\"content\":\"${value}\"}}"
+  _debug postdata "$postdata"
+  response="$(_post "$postdata" "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records" "" "POST" "application/json")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  id=$(echo "$response" | sed -n "s/{\"result\":{\"data\":{\"type\":\"dns_custom_records\",\"id\":\"\([^\"]*\)\",\"attributes\":{\"prefix\":\"$subdomain\",\"type\":\"TXT\",\"content\":\"$txtvalue\",\"priority\":0,\"ttl\":600}}},\"metadata\":null}/\1/p")
+
+  if [ -z "$id" ]; then
+    return 1
+  else
+    return 0
+  fi
+}
+
+_dns_one_delrecord() {
+  id="$1"
+  if [ -z "$id" ]; then
+    return 1
+  fi
+
+  response="$(_post "" "https://www.one.com/admin/api/domains/$maindomain/dns/custom_records/$id" "" "DELETE" "application/json")"
+  response="$(echo "$response" | _normalizeJson)"
+  _debug response "$response"
+
+  if [ "$response" = '{"result":null,"metadata":null}' ]; then
+    return 0
+  else
+    return 1
+  fi
+}