diff --git a/README.md b/README.md
index 9e3ec1a5..220168b7 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,7 @@ https://github.com/Neilpang/acmetest
 - Webroot mode
 - Standalone mode
 - Apache mode
-- Nginx mode ( Beta )
+- Nginx mode
 - DNS mode
 - [Stateless mode](https://github.com/Neilpang/acme.sh/wiki/Stateless-Mode)
 
@@ -238,7 +238,7 @@ More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
 
 If you are running a web server, Apache or Nginx, it is recommended to use the `Webroot mode`.
 
-Particularly, if you are running an Apache server, you should use Apache mode instead. This mode doesn't write any files to your web root folder.
+Particularly, if you are running an Apache server, you can use Apache mode instead. This mode doesn't write any files to your web root folder.
 
 Just set string "apache" as the second argument and it will force use of apache plugin automatically.
 
@@ -246,6 +246,10 @@ Just set string "apache" as the second argument and it will force use of apache
 acme.sh --issue --apache -d example.com -d www.example.com -d cp.example.com
 ```
 
+**This apache mode is only to issue the cert, it will not change your apache config files. 
+You will need to configure your website config files to use the cert by yourself.
+We don't want to mess your apache server, don't worry.**
+
 More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
 
 # 7. Use Nginx mode
@@ -266,6 +270,10 @@ So, the config is not changed.
 acme.sh --issue --nginx -d example.com -d www.example.com -d cp.example.com
 ```
 
+**This apache mode is only to issue the cert, it will not change your apache config files. 
+You will need to configure your website config files to use the cert by yourself.
+We don't want to mess your apache server, don't worry.**
+
 More examples: https://github.com/Neilpang/acme.sh/wiki/How-to-issue-a-cert
 
 # 8. Automatic DNS API integration
@@ -315,20 +323,15 @@ You don't have to do anything manually!
 1. Azure DNS
 1. selectel.com(selectel.ru) DNS API
 1. zonomi.com DNS API
-
-
-
-
-
+1. DreamHost.com API
 
 
 And: 
 
-1. lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
-   (DigitalOcean, DNSimple, DNSMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)
+**lexicon DNS API: https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api
+   (DigitalOcean, DNSimple, DNSMadeEasy, DNSPark, EasyDNS, Namesilo, NS1, PointHQ, Rage4 and Vultr etc.)**
 
 
-   
 **More APIs coming soon...**
 
 If your DNS provider is not on the supported list above, you can write your own DNS API script easily. If you do, please consider submitting a [Pull Request](https://github.com/Neilpang/acme.sh/pulls) and contribute it to the project.
@@ -337,7 +340,7 @@ For more details: [How to use DNS API](dnsapi)
 
 # 9. Use DNS manual mode:
 
-If your dns provider doesn't support any api access, you will have to add the txt record by your hand.
+If your dns provider doesn't support any api access, you can add the txt record by your hand.
 
 ```bash
 acme.sh --issue --dns -d example.com -d www.example.com -d cp.example.com
@@ -375,7 +378,7 @@ Ok, it's done.
 
 And we support them too!
 
-Just set the `length` parameter with a prefix `ec-`.
+Just set the `keylength` parameter with a prefix `ec-`.
 
 For example:
 
@@ -391,7 +394,7 @@ acme.sh --issue -w /home/wwwroot/example.com -d example.com --keylength ec-256
 acme.sh --issue -w /home/wwwroot/example.com -d example.com -d www.example.com --keylength ec-256
 ```
 
-Please look at the last parameter above.
+Please look at the `keylength` parameter above.
 
 Valid values are:
 
diff --git a/acme.sh b/acme.sh
index b9e57a7b..2be989f2 100755
--- a/acme.sh
+++ b/acme.sh
@@ -3598,6 +3598,10 @@ $_authorizations_map"
       _debug entry "$entry"
       if [ -z "$entry" ]; then
         _err "Error, can not get domain token entry $d"
+        _supported_vtypes="$(echo "$response" | _egrep_o "\"challenges\":\[[^]]*]" | tr '{' "\n" | grep type | cut -d '"' -f 4 | tr "\n" ' ')"
+        if [ "$_supported_vtypes" ]; then
+          _err "The supported validation types are: $_supported_vtypes, but you specified: $vtype"
+        fi
         _clearup
         _on_issue_err "$_post_hook"
         return 1
diff --git a/dnsapi/README.md b/dnsapi/README.md
index b5b73f47..8c43806c 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -515,7 +515,7 @@ acme.sh --issue --dns dns_nsone -d example.com -d www.example.com
 export DuckDNS_Token="aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"
 ```
 
-Please note that since DuckDNS uses StartSSL as their cert provider, thus 
+Please note that since DuckDNS uses StartSSL as their cert provider, thus
 --insecure may need to be used when issuing certs:
 ```
 acme.sh --insecure --issue --dns dns_duckdns -d mydomain.duckdns.org
@@ -744,6 +744,18 @@ acme.sh --issue --dns dns_zonomi -d example.com -d www.example.com
 
 The `ZM_Key` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
+## 40. Use DreamHost DNS API
+
+DNS API keys may be created at https://panel.dreamhost.com/?tree=home.api.
+Ensure the created key has add and remove privelages.
+
+```
+export DH_API_Key="<api key>"
+acme.sh --issue --dns dns_dreamhost -d example.com -d www.example.com
+```
+
+The 'DH_API_KEY' will be saved in `~/.acme.sh/account.conf` and will
+be reused when needed.
 
 # Use custom API
 
diff --git a/dnsapi/dns_ali.sh b/dnsapi/dns_ali.sh
index f796f076..543a0a54 100755
--- a/dnsapi/dns_ali.sh
+++ b/dnsapi/dns_ali.sh
@@ -10,6 +10,8 @@ dns_ali_add() {
   fulldomain=$1
   txtvalue=$2
 
+  Ali_Key="${Ali_Key:-$(_readaccountconf_mutable Ali_Key)}"
+  Ali_Secret="${Ali_Secret:-$(_readaccountconf_mutable Ali_Secret)}"
   if [ -z "$Ali_Key" ] || [ -z "$Ali_Secret" ]; then
     Ali_Key=""
     Ali_Secret=""
@@ -18,8 +20,8 @@ dns_ali_add() {
   fi
 
   #save the api key and secret to the account conf file.
-  _saveaccountconf Ali_Key "$Ali_Key"
-  _saveaccountconf Ali_Secret "$Ali_Secret"
+  _saveaccountconf_mutable Ali_Key "$Ali_Key"
+  _saveaccountconf_mutable Ali_Secret "$Ali_Secret"
 
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
@@ -32,6 +34,15 @@ dns_ali_add() {
 
 dns_ali_rm() {
   fulldomain=$1
+  txtvalue=$2
+  Ali_Key="${Ali_Key:-$(_readaccountconf_mutable Ali_Key)}"
+  Ali_Secret="${Ali_Secret:-$(_readaccountconf_mutable Ali_Secret)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    return 1
+  fi
+
   _clean
 }
 
@@ -76,16 +87,14 @@ _ali_rest() {
     return 1
   fi
 
+  _debug2 response "$response"
   if [ -z "$2" ]; then
-    message="$(printf "%s" "$response" | _egrep_o "\"Message\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
-    if [ -n "$message" ]; then
+    message="$(echo "$response" | _egrep_o "\"Message\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
+    if [ "$message" ]; then
       _err "$message"
       return 1
     fi
   fi
-
-  _debug2 response "$response"
-  return 0
 }
 
 _ali_urlencode() {
@@ -112,12 +121,14 @@ _ali_nonce() {
 }
 
 _check_exist_query() {
+  _qdomain="$1"
+  _qsubdomain="$2"
   query=''
   query=$query'AccessKeyId='$Ali_Key
   query=$query'&Action=DescribeDomainRecords'
-  query=$query'&DomainName='$1
+  query=$query'&DomainName='$_qdomain
   query=$query'&Format=json'
-  query=$query'&RRKeyWord=_acme-challenge'
+  query=$query'&RRKeyWord='$_qsubdomain
   query=$query'&SignatureMethod=HMAC-SHA1'
   query=$query"&SignatureNonce=$(_ali_nonce)"
   query=$query'&SignatureVersion=1.0'
@@ -169,17 +180,21 @@ _describe_records_query() {
 }
 
 _clean() {
-  _check_exist_query "$_domain"
+  _check_exist_query "$_domain" "$_sub_domain"
   if ! _ali_rest "Check exist records" "ignore"; then
     return 1
   fi
 
-  records="$(echo "$response" -n | _egrep_o "\"RecordId\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
-  printf "%s" "$records" \
-    | while read -r record_id; do
-      _delete_record_query "$record_id"
-      _ali_rest "Delete record $record_id" "ignore"
-    done
+  record_id="$(echo "$response" | tr '{' "\n" | grep "$_sub_domain" | grep "$txtvalue" | tr "," "\n" | grep RecordId | cut -d '"' -f 4)"
+  _debug2 record_id "$record_id"
+
+  if [ -z "$record_id" ]; then
+    _debug "record not found, skip"
+  else
+    _delete_record_query "$record_id"
+    _ali_rest "Delete record $record_id" "ignore"
+  fi
+
 }
 
 _timestamp() {
diff --git a/dnsapi/dns_aws.sh b/dnsapi/dns_aws.sh
index ee8efb38..71f969f0 100755
--- a/dnsapi/dns_aws.sh
+++ b/dnsapi/dns_aws.sh
@@ -48,7 +48,7 @@ dns_aws_add() {
   fi
 
   if _contains "$response" "<Name>$fulldomain.</Name>"; then
-    _resource_record="$(echo "$response" | _egrep_o "<ResourceRecords.*</ResourceRecords>" | sed "s/<ResourceRecords>//" | sed "s#</ResourceRecords>##")"
+    _resource_record="$(echo "$response" | sed 's/<ResourceRecordSet>/"/g' | tr '"' "\n" | grep "<Name>$fulldomain.</Name>" | _egrep_o "<ResourceRecords.*</ResourceRecords>" | sed "s/<ResourceRecords>//" | sed "s#</ResourceRecords>##")"
     _debug "_resource_record" "$_resource_record"
   else
     _debug "single new add"
@@ -93,7 +93,7 @@ dns_aws_rm() {
   fi
 
   if _contains "$response" "<Name>$fulldomain.</Name>"; then
-    _resource_record="$(echo "$response" | _egrep_o "<ResourceRecords.*</ResourceRecords>" | sed "s/<ResourceRecords>//" | sed "s#</ResourceRecords>##")"
+    _resource_record="$(echo "$response" | sed 's/<ResourceRecordSet>/"/g' | tr '"' "\n" | grep "<Name>$fulldomain.</Name>" | _egrep_o "<ResourceRecords.*</ResourceRecords>" | sed "s/<ResourceRecords>//" | sed "s#</ResourceRecords>##")"
     _debug "_resource_record" "$_resource_record"
   else
     _debug "no records exists, skip"
diff --git a/dnsapi/dns_cx.sh b/dnsapi/dns_cx.sh
index b3e04032..f2d3eadb 100755
--- a/dnsapi/dns_cx.sh
+++ b/dnsapi/dns_cx.sh
@@ -62,7 +62,6 @@ existing_records() {
   _debug "Getting txt records"
   root=$1
   sub=$2
-  count=0
   if ! _rest GET "record/$_domain_id?:domain_id?host_id=0&offset=0&row_num=100"; then
     return 1
   fi
diff --git a/dnsapi/dns_dp.sh b/dnsapi/dns_dp.sh
index 301a1f6c..3cc720aa 100755
--- a/dnsapi/dns_dp.sh
+++ b/dnsapi/dns_dp.sh
@@ -15,6 +15,8 @@ dns_dp_add() {
   fulldomain=$1
   txtvalue=$2
 
+  DP_Id="${DP_Id:-$(_readaccountconf_mutable DP_Id)}"
+  DP_Key="${DP_Key:-$(_readaccountconf_mutable DP_Key)}"
   if [ -z "$DP_Id" ] || [ -z "$DP_Key" ]; then
     DP_Id=""
     DP_Key=""
@@ -24,8 +26,8 @@ dns_dp_add() {
   fi
 
   #save the api key and email to the account conf file.
-  _saveaccountconf DP_Id "$DP_Id"
-  _saveaccountconf DP_Key "$DP_Key"
+  _saveaccountconf_mutable DP_Id "$DP_Id"
+  _saveaccountconf_mutable DP_Key "$DP_Key"
 
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
@@ -33,24 +35,18 @@ dns_dp_add() {
     return 1
   fi
 
-  existing_records "$_domain" "$_sub_domain"
-  _debug count "$count"
-  if [ "$?" != "0" ]; then
-    _err "Error get existing records."
-    return 1
-  fi
+  add_record "$_domain" "$_sub_domain" "$txtvalue"
 
-  if [ "$count" = "0" ]; then
-    add_record "$_domain" "$_sub_domain" "$txtvalue"
-  else
-    update_record "$_domain" "$_sub_domain" "$txtvalue"
-  fi
 }
 
 #fulldomain txtvalue
 dns_dp_rm() {
   fulldomain=$1
   txtvalue=$2
+
+  DP_Id="${DP_Id:-$(_readaccountconf_mutable DP_Id)}"
+  DP_Key="${DP_Key:-$(_readaccountconf_mutable DP_Key)}"
+
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
     _err "invalid domain"
@@ -83,37 +79,6 @@ dns_dp_rm() {
 
 }
 
-#usage:  root  sub
-#return if the sub record already exists.
-#echos the existing records count.
-# '0' means doesn't exist
-existing_records() {
-  _debug "Getting txt records"
-  root=$1
-  sub=$2
-
-  if ! _rest POST "Record.List" "login_token=$DP_Id,$DP_Key&domain_id=$_domain_id&sub_domain=$_sub_domain"; then
-    return 1
-  fi
-
-  if _contains "$response" 'No records'; then
-    count=0
-    return 0
-  fi
-
-  if _contains "$response" "Action completed successful"; then
-    count=$(printf "%s" "$response" | grep -c '<type>TXT</type>' | tr -d ' ')
-    record_id=$(printf "%s" "$response" | grep '^<id>' | tail -1 | cut -d '>' -f 2 | cut -d '<' -f 1)
-    _debug record_id "$record_id"
-    return 0
-  else
-    _err "get existing records error."
-    return 1
-  fi
-
-  count=0
-}
-
 #add the txt record.
 #usage: root  sub  txtvalue
 add_record() {
@@ -128,34 +93,7 @@ add_record() {
     return 1
   fi
 
-  if _contains "$response" "Action completed successful"; then
-
-    return 0
-  fi
-
-  return 1 #error
-}
-
-#update the txt record
-#Usage: root sub txtvalue
-update_record() {
-  root=$1
-  sub=$2
-  txtvalue=$3
-  fulldomain="$sub.$root"
-
-  _info "Updating record"
-
-  if ! _rest POST "Record.Modify" "login_token=$DP_Id,$DP_Key&format=json&domain_id=$_domain_id&sub_domain=$_sub_domain&record_type=TXT&value=$txtvalue&record_line=默认&record_id=$record_id"; then
-    return 1
-  fi
-
-  if _contains "$response" "Action completed successful"; then
-
-    return 0
-  fi
-
-  return 1 #error
+  _contains "$response" "Action completed successful" || _contains "$response" "Domain record already exists"
 }
 
 ####################  Private functions below ##################################
diff --git a/dnsapi/dns_dreamhost.sh b/dnsapi/dns_dreamhost.sh
new file mode 100644
index 00000000..a4017938
--- /dev/null
+++ b/dnsapi/dns_dreamhost.sh
@@ -0,0 +1,97 @@
+#!/usr/bin/env sh
+
+#Author: RhinoLance
+#Report Bugs here: https://github.com/RhinoLance/acme.sh
+#
+
+#define the api endpoint
+DH_API_ENDPOINT="https://api.dreamhost.com/"
+querystring=""
+
+########  Public functions #####################
+
+#Usage: dns_myapi_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dreamhost_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! validate "$fulldomain" "$txtvalue"; then
+    return 1
+  fi
+
+  querystring="key=$DH_API_KEY&cmd=dns-add_record&record=$fulldomain&type=TXT&value=$txtvalue"
+  if ! submit "$querystring"; then
+    return 1
+  fi
+
+  return 0
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_dreamhost_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if ! validate "$fulldomain" "$txtvalue"; then
+    return 1
+  fi
+
+  querystring="key=$DH_API_KEY&cmd=dns-remove_record&record=$fulldomain&type=TXT&value=$txtvalue"
+  if ! submit "$querystring"; then
+    return 1
+  fi
+
+  return 0
+}
+
+####################  Private functions below ##################################
+
+#send the command to the api endpoint.
+submit() {
+  querystring=$1
+
+  url="$DH_API_ENDPOINT?$querystring"
+
+  _debug url "$url"
+
+  if ! response="$(_get "$url")"; then
+    _err "Error <$1>"
+    return 1
+  fi
+
+  if [ -z "$2" ]; then
+    message="$(echo "$response" | _egrep_o "\"Message\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
+    if [ -n "$message" ]; then
+      _err "$message"
+      return 1
+    fi
+  fi
+
+  _debug response "$response"
+
+  return 0
+}
+
+#check that we have a valid API Key
+validate() {
+  fulldomain=$1
+  txtvalue=$2
+
+  _info "Using dreamhost"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  #retrieve the API key from the environment variable if it exists, otherwise look for a saved key.
+  DH_API_KEY="${DH_API_KEY:-$(_readaccountconf_mutable DH_API_KEY)}"
+
+  if [ -z "$DH_API_KEY" ]; then
+    DH_API_KEY=""
+    _err "You didn't specify the DreamHost api key yet (export DH_API_KEY=\"<api key>\")"
+    _err "Please login to your control panel, create a key and try again."
+    return 1
+  fi
+
+  #save the api key to the account conf file.
+  _saveaccountconf_mutable DH_API_KEY "$DH_API_KEY"
+}
diff --git a/dnsapi/dns_gd.sh b/dnsapi/dns_gd.sh
index f2dd1fd5..5fb1b174 100755
--- a/dnsapi/dns_gd.sh
+++ b/dnsapi/dns_gd.sh
@@ -15,6 +15,8 @@ dns_gd_add() {
   fulldomain=$1
   txtvalue=$2
 
+  GD_Key="${GD_Key:-$(_readaccountconf_mutable GD_Key)}"
+  GD_Secret="${GD_Secret:-$(_readaccountconf_mutable GD_Secret)}"
   if [ -z "$GD_Key" ] || [ -z "$GD_Secret" ]; then
     GD_Key=""
     GD_Secret=""
@@ -24,8 +26,8 @@ dns_gd_add() {
   fi
 
   #save the api key and email to the account conf file.
-  _saveaccountconf GD_Key "$GD_Key"
-  _saveaccountconf GD_Secret "$GD_Secret"
+  _saveaccountconf_mutable GD_Key "$GD_Key"
+  _saveaccountconf_mutable GD_Secret "$GD_Secret"
 
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
@@ -36,8 +38,27 @@ dns_gd_add() {
   _debug _sub_domain "$_sub_domain"
   _debug _domain "$_domain"
 
+  _debug "Getting existing records"
+  if ! _gd_rest GET "domains/$_domain/records/TXT/$_sub_domain"; then
+    return 1
+  fi
+
+  if _contains "$response" "$txtvalue"; then
+    _info "The record is existing, skip"
+    return 0
+  fi
+
+  _add_data="{\"data\":\"$txtvalue\"}"
+  for t in $(echo "$response" | tr '{' "\n" | grep "\"name\":\"$_sub_domain\"" | tr ',' "\n" | grep '"data"' | cut -d : -f 2); do
+    _debug2 t "$t"
+    if [ "$t" ]; then
+      _add_data="$_add_data,{\"data\":$t}"
+    fi
+  done
+  _debug2 _add_data "$_add_data"
+
   _info "Adding record"
-  if _gd_rest PUT "domains/$_domain/records/TXT/$_sub_domain" "[{\"data\":\"$txtvalue\"}]"; then
+  if _gd_rest PUT "domains/$_domain/records/TXT/$_sub_domain" "[$_add_data]"; then
     if [ "$response" = "{}" ]; then
       _info "Added, sleeping 10 seconds"
       _sleep 10
@@ -56,7 +77,47 @@ dns_gd_add() {
 #fulldomain
 dns_gd_rm() {
   fulldomain=$1
+  txtvalue=$2
 
+  GD_Key="${GD_Key:-$(_readaccountconf_mutable GD_Key)}"
+  GD_Secret="${GD_Secret:-$(_readaccountconf_mutable GD_Secret)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting existing records"
+  if ! _gd_rest GET "domains/$_domain/records/TXT/$_sub_domain"; then
+    return 1
+  fi
+
+  if ! _contains "$response" "$txtvalue"; then
+    _info "The record is not existing, skip"
+    return 0
+  fi
+
+  _add_data=""
+  for t in $(echo "$response" | tr '{' "\n" | grep "\"name\":\"$_sub_domain\"" | tr ',' "\n" | grep '"data"' | cut -d : -f 2); do
+    _debug2 t "$t"
+    if [ "$t" ] && [ "$t" != "\"$txtvalue\"" ]; then
+      if [ "$_add_data" ]; then
+        _add_data="$_add_data,{\"data\":$t}"
+      else
+        _add_data="{\"data\":$t}"
+      fi
+    fi
+  done
+  if [ -z "$_add_data" ]; then
+    _add_data="{\"data\":\"\"}"
+  fi
+  _debug2 _add_data "$_add_data"
+
+  _gd_rest PUT "domains/$_domain/records/TXT/$_sub_domain" "[$_add_data]"
 }
 
 ####################  Private functions below ##################################
diff --git a/dnsapi/dns_lua.sh b/dnsapi/dns_lua.sh
index 00c54430..be678b9d 100755
--- a/dnsapi/dns_lua.sh
+++ b/dnsapi/dns_lua.sh
@@ -17,6 +17,8 @@ dns_lua_add() {
   fulldomain=$1
   txtvalue=$2
 
+  LUA_Key="${LUA_Key:-$(_readaccountconf_mutable LUA_Key)}"
+  LUA_Email="${LUA_Email:-$(_readaccountconf_mutable LUA_Email)}"
   if [ -z "$LUA_Key" ] || [ -z "$LUA_Email" ]; then
     LUA_Key=""
     LUA_Email=""
@@ -26,8 +28,8 @@ dns_lua_add() {
   fi
 
   #save the api key and email to the account conf file.
-  _saveaccountconf LUA_Key "$LUA_Key"
-  _saveaccountconf LUA_Email "$LUA_Email"
+  _saveaccountconf_mutable LUA_Key "$LUA_Key"
+  _saveaccountconf_mutable LUA_Email "$LUA_Email"
 
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
@@ -38,50 +40,26 @@ dns_lua_add() {
   _debug _sub_domain "$_sub_domain"
   _debug _domain "$_domain"
 
-  _debug "Getting txt records"
-  _LUA_rest GET "zones/${_domain_id}/records"
-
-  if ! _contains "$response" "\"id\":"; then
-    _err "Error"
-    return 1
-  fi
-
-  count=$(printf "%s\n" "$response" | _egrep_o "\"name\":\"$fulldomain.\",\"type\":\"TXT\"" | wc -l | tr -d " ")
-  _debug count "$count"
-  if [ "$count" = "0" ]; then
-    _info "Adding record"
-    if _LUA_rest POST "zones/$_domain_id/records" "{\"type\":\"TXT\",\"name\":\"$fulldomain.\",\"content\":\"$txtvalue\",\"ttl\":120}"; then
-      if _contains "$response" "$fulldomain"; then
-        _info "Added"
-        #todo: check if the record takes effect
-        return 0
-      else
-        _err "Add txt record error."
-        return 1
-      fi
-    fi
-    _err "Add txt record error."
-  else
-    _info "Updating record"
-    record_id=$(printf "%s\n" "$response" | _egrep_o "\"id\":[^,]*,\"name\":\"$fulldomain.\",\"type\":\"TXT\"" | _head_n 1 | cut -d: -f2 | cut -d, -f1)
-    _debug "record_id" "$record_id"
-
-    _LUA_rest PUT "zones/$_domain_id/records/$record_id" "{\"id\":$record_id,\"type\":\"TXT\",\"name\":\"$fulldomain.\",\"content\":\"$txtvalue\",\"zone_id\":$_domain_id,\"ttl\":120}"
-    if [ "$?" = "0" ] && _contains "$response" "updated_at"; then
-      _info "Updated!"
+  _info "Adding record"
+  if _LUA_rest POST "zones/$_domain_id/records" "{\"type\":\"TXT\",\"name\":\"$fulldomain.\",\"content\":\"$txtvalue\",\"ttl\":120}"; then
+    if _contains "$response" "$fulldomain"; then
+      _info "Added"
       #todo: check if the record takes effect
       return 0
+    else
+      _err "Add txt record error."
+      return 1
     fi
-    _err "Update error"
-    return 1
   fi
-
 }
 
 #fulldomain
 dns_lua_rm() {
   fulldomain=$1
   txtvalue=$2
+
+  LUA_Key="${LUA_Key:-$(_readaccountconf_mutable LUA_Key)}"
+  LUA_Email="${LUA_Email:-$(_readaccountconf_mutable LUA_Email)}"
   _debug "First detect the root zone"
   if ! _get_root "$fulldomain"; then
     _err "invalid domain"
diff --git a/dnsapi/dns_ovh.sh b/dnsapi/dns_ovh.sh
index 60094739..2669cc86 100755
--- a/dnsapi/dns_ovh.sh
+++ b/dnsapi/dns_ovh.sh
@@ -79,6 +79,9 @@ _ovh_get_api() {
 }
 
 _initAuth() {
+  OVH_AK="${OVH_AK:-$(_readaccountconf_mutable OVH_AK)}"
+  OVH_AS="${OVH_AS:-$(_readaccountconf_mutable OVH_AS)}"
+
   if [ -z "$OVH_AK" ] || [ -z "$OVH_AS" ]; then
     OVH_AK=""
     OVH_AS=""
@@ -87,21 +90,26 @@ _initAuth() {
     return 1
   fi
 
-  #save the api key and email to the account conf file.
-  _saveaccountconf OVH_AK "$OVH_AK"
-  _saveaccountconf OVH_AS "$OVH_AS"
+  if [ "$OVH_AK" != "$(_readaccountconf OVH_AK)" ]; then
+    _info "It seems that your ovh key is changed, let's clear consumer key first."
+    _clearaccountconf OVH_CK
+  fi
+  _saveaccountconf_mutable OVH_AK "$OVH_AK"
+  _saveaccountconf_mutable OVH_AS "$OVH_AS"
 
+  OVH_END_POINT="${OVH_END_POINT:-$(_readaccountconf_mutable OVH_END_POINT)}"
   if [ -z "$OVH_END_POINT" ]; then
     OVH_END_POINT="ovh-eu"
   fi
   _info "Using OVH endpoint: $OVH_END_POINT"
   if [ "$OVH_END_POINT" != "ovh-eu" ]; then
-    _saveaccountconf OVH_END_POINT "$OVH_END_POINT"
+    _saveaccountconf_mutable OVH_END_POINT "$OVH_END_POINT"
   fi
 
   OVH_API="$(_ovh_get_api $OVH_END_POINT)"
   _debug OVH_API "$OVH_API"
 
+  OVH_CK="${OVH_CK:-$(_readaccountconf_mutable OVH_CK)}"
   if [ -z "$OVH_CK" ]; then
     _info "OVH consumer key is empty, Let's get one:"
     if ! _ovh_authentication; then