diff --git a/deploy/exim4.sh b/deploy/exim4.sh
deleted file mode 100644
index 573f762b..00000000
--- a/deploy/exim4.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/usr/bin/env sh
-
-#Here is a script to deploy cert to exim4 server.
-
-#returns 0 means success, otherwise error.
-
-#DEPLOY_EXIM4_CONF="/etc/exim/exim.conf"
-#DEPLOY_EXIM4_RELOAD="service exim4 restart"
-
-########  Public functions #####################
-
-#domain keyfile certfile cafile fullchain
-exim4_deploy() {
-  _cdomain="$1"
-  _ckey="$2"
-  _ccert="$3"
-  _cca="$4"
-  _cfullchain="$5"
-
-  _debug _cdomain "$_cdomain"
-  _debug _ckey "$_ckey"
-  _debug _ccert "$_ccert"
-  _debug _cca "$_cca"
-  _debug _cfullchain "$_cfullchain"
-
-  _ssl_path="/etc/acme.sh/exim4"
-  if ! mkdir -p "$_ssl_path"; then
-    _err "Can not create folder:$_ssl_path"
-    return 1
-  fi
-
-  _info "Copying key and cert"
-  _real_key="$_ssl_path/exim4.key"
-  if ! cat "$_ckey" >"$_real_key"; then
-    _err "Error: write key file to: $_real_key"
-    return 1
-  fi
-  _real_fullchain="$_ssl_path/exim4.pem"
-  if ! cat "$_cfullchain" >"$_real_fullchain"; then
-    _err "Error: write key file to: $_real_fullchain"
-    return 1
-  fi
-
-  DEFAULT_EXIM4_RELOAD="service exim4 restart"
-  _reload="${DEPLOY_EXIM4_RELOAD:-$DEFAULT_EXIM4_RELOAD}"
-
-  if [ -z "$IS_RENEW" ]; then
-    DEFAULT_EXIM4_CONF="/etc/exim/exim.conf"
-    if [ ! -f "$DEFAULT_EXIM4_CONF" ]; then
-      DEFAULT_EXIM4_CONF="/etc/exim4/exim4.conf.template"
-    fi
-    _exim4_conf="${DEPLOY_EXIM4_CONF:-$DEFAULT_EXIM4_CONF}"
-    _debug _exim4_conf "$_exim4_conf"
-    if [ ! -f "$_exim4_conf" ]; then
-      if [ -z "$DEPLOY_EXIM4_CONF" ]; then
-        _err "exim4 conf is not found, please define DEPLOY_EXIM4_CONF"
-        return 1
-      else
-        _err "It seems that the specified exim4 conf is not valid, please check."
-        return 1
-      fi
-    fi
-    if [ ! -w "$_exim4_conf" ]; then
-      _err "The file $_exim4_conf is not writable, please change the permission."
-      return 1
-    fi
-    _backup_conf="$DOMAIN_BACKUP_PATH/exim4.conf.bak"
-    _info "Backup $_exim4_conf to $_backup_conf"
-    cp "$_exim4_conf" "$_backup_conf"
-
-    _info "Modify exim4 conf: $_exim4_conf"
-    if _setopt "$_exim4_conf" "tls_certificate" "=" "$_real_fullchain" \
-      && _setopt "$_exim4_conf" "tls_privatekey" "=" "$_real_key"; then
-      _info "Set config success!"
-    else
-      _err "Config exim4 server error, please report bug to us."
-      _info "Restoring exim4 conf"
-      if cat "$_backup_conf" >"$_exim4_conf"; then
-        _info "Restore conf success"
-        eval "$_reload"
-      else
-        _err "Oops, error restore exim4 conf, please report bug to us."
-      fi
-      return 1
-    fi
-  fi
-
-  _info "Run reload: $_reload"
-  if eval "$_reload"; then
-    _info "Reload success!"
-    if [ "$DEPLOY_EXIM4_CONF" ]; then
-      _savedomainconf DEPLOY_EXIM4_CONF "$DEPLOY_EXIM4_CONF"
-    else
-      _cleardomainconf DEPLOY_EXIM4_CONF
-    fi
-    if [ "$DEPLOY_EXIM4_RELOAD" ]; then
-      _savedomainconf DEPLOY_EXIM4_RELOAD "$DEPLOY_EXIM4_RELOAD"
-    else
-      _cleardomainconf DEPLOY_EXIM4_RELOAD
-    fi
-    return 0
-  else
-    _err "Reload error, restoring"
-    if cat "$_backup_conf" >"$_exim4_conf"; then
-      _info "Restore conf success"
-      eval "$_reload"
-    else
-      _err "Oops, error restore exim4 conf, please report bug to us."
-    fi
-    return 1
-  fi
-  return 0
-
-}