diff --git a/dnsapi/dns_dnsever.sh b/dnsapi/dns_dnsever.sh
new file mode 100644
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+++ b/dnsapi/dns_dnsever.sh
@@ -0,0 +1,245 @@
+#!/usr/bin/env sh
+
+#Here is a sample custom api script.
+#This file name is "dns_dnsever.sh"
+#So, here must be a method   dns_dnsever_add()
+#Which will be called by acme.sh to add the txt record to your api system.
+#returns 0 means success, otherwise error.
+#
+#Author: hiska
+#Report Bugs here: https://github.com/hiskang/acme.sh
+#
+########  Public functions #####################
+
+#Usage: dns_myapi_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_dnsever_add() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using dnsever"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if [ -z "$DNSEVER_ID" ] || [ -z "$DNSEVER_PW" ]; then
+    DNSEVER_ID=""
+    DNSEVER_PW=""
+    _err "You don't specify dnsever.com ID or PW yet."
+    _err "Please create you key and try again."
+    return 1
+  fi
+
+  #save the api key and email to the account conf file.
+  _saveaccountconf DNSEVER_ID "$DNSEVER_ID"
+  _saveaccountconf DNSEVER_PW "$DNSEVER_PW"
+
+  dnsever_txt "add" "$DNSEVER_ID" "$DNSEVER_PW" "$fulldomain" "$txtvalue"
+  return $?
+}
+
+#Usage: fulldomain txtvalue
+#Remove the txt record after validation.
+dns_dnsever_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  _info "Using dnsever"
+  _debug fulldomain "$fulldomain"
+  _debug txtvalue "$txtvalue"
+
+  if [ -z "$DNSEVER_ID" ] || [ -z "$DNSEVER_PW" ]; then
+    DNSEVER_ID=""
+    DNSEVER_PW=""
+    _err "You don't specify dnsever.com ID or PW yet."
+    _err "Please create you key and try again."
+    return 1
+  fi
+
+  #save the api key and email to the account conf file.
+  _saveaccountconf DNSEVER_ID "$DNSEVER_ID"
+  _saveaccountconf DNSEVER_PW "$DNSEVER_PW"
+
+  dnsever_txt "delete" "$DNSEVER_ID" "$DNSEVER_PW" "$fulldomain" "$txtvalue"
+  return $?
+}
+
+####################  Private functions below ##################################
+
+dnsever_txt(){
+  action="$1"; login_id="$2"; login_password="$3"; fulldomain="$4"; txt="$5"
+
+  _inithttp
+
+  if [ "$_ACME_CURL" ] && [ "${ACME_USE_WGET:-0}" = "0" ]; then
+    httpmethod_save="POST -c /tmp/dnsever.txt"
+    httpmethod_load="POST -b /tmp/dnsever.txt"
+  else
+    httpmethod_save="POST --load-cookies /tmp/dnsever.txt"
+    httpmethod_load="POST --save-cookies /tmp/dnsever.txt"
+  fi
+
+  response=$(_post "login_id=$login_id&login_password=$login_password" "https://kr.dnsever.com/index.html" "" "$httpmethod_save")
+  if [ $? != 0 -o -z "$response" ]; then
+    _err "dnsever_txt:$action ERROR login failed. Please check https://kr.dnsever.com/index.html with login_id=$login_id login_password=$login_password"
+    dnsever_logout "" "$httpmethod_load"
+    return 1
+  fi
+
+  response=$(_post "" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+  if [ $? != 0 -o -z "$response" ]; then
+    _err "dnsever_txt:$action ERROR login failed. Please check https://kr.dnsever.com/start.html after login"
+    dnsever_logout "" "$httpmethod_load"
+    return 1
+  fi
+ 
+  skey=$(printf "%s\n" "$response" | grep skey | sed -n -e "s/^.*value=['\"]\(.*\)['\"].*/\1/p")
+  if [ -z "$skey" ]; then
+    _err "dnsever_txt:$action ERROR login failed with login_id=$login_id login_password=$login_password"
+    dnsever_logout "$skey" "$httpmethod_load"
+    return 1
+  fi
+
+  user_domain=$(dnsever_select_user_domain "$fulldomain" "$response")
+
+  if [ -z "$user_domain" ]; then
+    _err "dnsever_txt:$action ERROR no matching domain in DNSEver"
+    dnsever_logout "$skey" "$httpmethod_load"
+    return 1
+  fi
+
+  if [ "$action" = "add" ]; then
+
+    subname=$(echo "$fulldomain" | sed "s/\.$user_domain\$//")
+
+    if [ -z "$subname" -o -z "$txt" ]; then
+      _err "dnsever_txt ERROR subname=$subname or txt=$txt is empty"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    _info "dnsever_txt:$action skey=$skey user_domain=$user_domain selected_menu=edittxt command=add_txt subname=$subname txt=$txt"
+
+    response=$(_post "skey=$skey&user_domain=$user_domain&selected_menu=edittxt" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+    if [ $? != 0 -o -z "$response" ]; then
+      _err "dnsever_txt:$action ERROR failed to get TXT records from DNSEver"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    check=$(dnsever_check "$fulldomain" "$txt" "$response")
+    if [ $? = 0 -o -n "$check" ]; then
+      _err "dnsever_txt:$action ERROR $fulldomain=$txt already exists"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    response=$(_post "skey=$skey&user_domain=$user_domain&selected_menu=edittxt&command=add_txt&subname=$subname&new_txt=$txt" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+    if [ $? != 0 -o -z "$response" ]; then
+      _err "dnsever_txt:$action ERROR failed to add_text $fulldomain=$txt"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    check=$(dnsever_check "$fulldomain" "$txt" "$response")
+    if [ $? != 0 -o -z "$check" ]; then
+      _err "dnsever_txt:$action ERROR failed to get newly added $fulldomain=$txt"
+      dnsever_logout "$skey" "$httpmethod_load"
+    fi
+
+  elif [ "$action" = "delete" ]; then
+
+    response=$(_post "skey=$skey&user_domain=$user_domain&selected_menu=edittxt" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+    if [ $? != 0 -o -z "$response" ]; then
+      _err "dnsever_txt:$action ERROR failed to get TXT records from DNSEver"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    check=$(dnsever_check "$fulldomain" "$txt" "$response")
+    if [ $? != 0 -o -z "$check" ]; then
+      _err "dnsever_txt:$action ERROR $fulldomain=$txt does not exists"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    _info "dnsever_txt:$action skey=$skey user_domain=$user_domain selected_menu=edittxt command=delete_txt$(echo "$check"|sed 's/\&/ /g')"
+
+    response=$(_post "skey=$skey&user_domain=$user_domain&selected_menu=edittxt&command=delete_txt&$check" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+    if [ $? != 0 -o -z "&response" ]; then
+      _err "dnsever_txt:$action ERROR failed to delete $fulldomain=$txt from DNSEver"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+  
+    response=$(_post "skey=$skey&user_domain=$user_domain&selected_menu=edittxt" "https://kr.dnsever.com/start.html" "" "$httpmethod_load")
+    if [ $? != 0 -o -z "&response" ]; then
+      _err "dnsever_txt:$action ERROR failed to get $fulldomain=$txt from DNSEver"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+    check=$(dnsever_check "$fulldomain" "$txt" "$response")
+    if [ $? = 0 -a -n "$check" ]; then
+      _err "dnsever_txt:$action ERROR $fulldomain=$txt still exists"
+      dnsever_logout "$skey" "$httpmethod_load"
+      return 1
+    fi
+
+  else
+    _err "dnsever_txt:$action action should be add or delete"
+  fi
+
+  dnsever_logout "$skey" "$httpmethod_load"
+  return 0 
+}
+
+dnsever_logout(){
+  skey="$1"; httpmethod_load="$2"
+
+  if [ -n "$skey" -a -n "$httpmethod_load" ]; then
+    response=$(_post "skey=$skey" "https://kr.dnsever.com/logout.php" "" "$httpmethod_load")  
+  fi
+  if [ -e /tmp/dnsever.txt ]; then
+    rm -f /tmp/dnsever.txt
+  fi
+}
+
+dnsever_select_user_domain(){
+  fulldomain="$1"; response="$2"
+
+  domains=$(printf "%s\n" "$response" | grep OPTION | sed -n -e "s/^.*value=['\"]\(.*\)['\"].*/\1/p" | grep -v "^$")
+  nmax=0; selected=""
+  for domain in $domains; do
+    if echo "$fulldomain" | grep -q "$domain\$"; then
+      n=${#domain}
+      if [ "$n" -gt $nmax ]; then
+        nmax=$n
+        selected="$domain"
+      fi
+    fi
+  done
+  echo "$selected"
+}
+
+dnsever_check(){
+  fulldomain="$1"
+  old_txt="$1"
+  response="$3"
+
+  matched=$(printf "%s\n" "$response" | grep "$fulldomain" | sed -n -e "s/^.*name=['\"]\(.*\)['\"].*value.*$/\1/p" | sed 's/domain_for_txt_//g')
+
+  check=""
+  for n in $matched; do
+    seq=$(printf "%s\n" "$response" | grep "seq_$n" | sed -n -e "s/^.*value=['\"]\(.*\)['\"].*/\1/p")
+    old_txt=$(printf "%s\n" "$response" | grep "old_txt_$n" | sed -n -e "s/^.*value=['\"]\(.*\)['\"].*id=.*$/\1/p")
+    if [ "$txtvalue" != "$old_txt" ]; then
+      _info "dnsever_check skip deleting seq=$seq fulldomain=$fulldomain due to old_txt=$old_txt was different from txtvalue=$txtvalue skip"
+      continue
+    fi
+    check="${check}&check[]=$n&domain_for_txt_$n=$fulldomain&seq_$n=$seq&old_txt_$n=$old_txt"
+  done
+
+  if [ -z "$check" ]; then
+    return 1
+  fi
+
+  echo "$check"
+  return 0
+}