阿里云
>
dns
>
dns邮件系统
dns邮件系统
外网
DNS系统
外网访问及
邮件系统
外网域名访问问题
通过外网直接访问
邮件系统
外网地址，能够正常访问，推断为
DNS
问题。查看F5，确认
DNS
虚地址：10.60.1.184；查看防火墙，确认
DNS
转换后地址10.60.7.236；查看radware，确认
DNS
外网地址（联通：123.x，电信：58.x）。检查radware、防火墙、F5...
如何实现和没有
DNS
MX记录的
邮件系统
通讯
问题在于dreamfire公司的邮件服务器原来只作为企业内部的邮件服务器使用，没有注册
DNS邮件
交换记录，xiaonuo公司的邮件
系统
没有办法通过DNS解析到dreamfire公司的邮件服务器地址，邮件管理员怎么才能完成这一任务呢？实验目标：1、和没有...
1
您可能感兴趣
.
dns工作
.
dns问题
.
dns网络
.
dns数据
.
dns设置
.
dns安装
.
dns是什么
.
dns备案
{"optioninfo":{"dynamic":"true","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"dns","iconImg":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","contentLink":"https://www.aliyun.com/product/dns","title":"阿里云DNS","des":"阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。","btn1":"产品控制台","link1":"https://dns.console.aliyun.com/ ","btn2":"开通云解析DNS","link2":"https://common-buy.aliyun.com/?commodityCode=alidns_pre&request=%7B%22version%22:%22version_personal%22,%22dns_security%22:%22no%22,%22domain_numbers%22:1,%22ord_time%22:%22%5B1,%5C%22Year%5C%22%5D%22%7D#/buy","btn3":"了解更多","link3":"https://www.aliyun.com/product/dns","infoGroup":[{"infoName":"爆款产品","infoContent":{"firstContentName":"云解析DNS","firstContentLink":"https://www.aliyun.com/ntms/wanwang/domain/dns","lastContentName":"全局流量管理GTM","lastContentLink":"https://www.aliyun.com/product/alidnsgtm"}},{"infoName":"热门活动","infoContent":{"firstContentName":"DNS全系产品免费试用","firstContentLink":"https://www.aliyun.com/activity/dns/dns_freetrial","lastContentName":"DNS新用户限时7.5折","lastContentLink":"https://www.aliyun.com/activity/dns/newdiscount"}},{"infoName":"爆款产品","infoContent":{"firstContentName":"VPC内网解析","lastContentName":"HTTPDNS/DoH解析","firstContentLink":"https://www.aliyun.com/product/pvtz","lastContentLink":"https://www.aliyun.com/activity/dns/pubdns_launch"}},{"infoName":"更多场景","infoContent":{"firstContentName":"混合云DNS","firstContentLink":"https://www.aliyun.com/activity/dns/hybrid_dns_scheme"}}],"link":"https://www.aliyun.com/product/dns"}],"card":[{"link":"#","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","title":"云服务器ECS","des":"云服务器（Elastic Compute Service，简称 ECS）是一种简单高效、处理能力可弹性伸缩的计算服务，帮助您快速构建更稳定、安全的应用，提升运维效率，降低 IT 成本，使您更专注于核心业务。","btn1":"FPGA云服务器","link1":"#","btn2":"GPU云服务器","link2":"#","tip":"新一代云服务器N5 （Xeon® (Skylake)处理器）上线！<a href=\"#\" target=\"_blank\">立即申请</a>"}],"search":[{"txt":"云数据库","link":"#"}],"infoCard":[{"fontSwitch":"shallow","bannerTitle":"","bannerUrl":"https://img.alicdn.com/tfs/TB1jLHUG1H2gK0jSZJnXXaT1FXa-1740-328.png","bannerContent":"","liveButtonName":"","liveButtonLink":"","homePageName":"","homePageLink":"","contentTitle":"","linkGroup":[{"linkContent":"","linkTo":"","link":""}]}],"title":{"mainTitle":"云原生助力企业全面拥抱云计算","subtitle":"这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍。","linkUrl":"#1","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB14iILhgDqK1RjSZSyXXaxEVXa-286-101.jpg","icon":"aliyun-icon-play","textColor":"light"},"dataList":[{"summary":"云原生助力企业全面拥抱云计算","author":"叔同（阿里巴巴研究员、阿里云原生应用平台负责人）","linksUrl":""}],"sceneCard":[{"title":"云计算试飞员老蒋开课啦！第一期：电商网站搭建","des":"这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。","btn":"立即观看","link":"#","image":"https://"}],"txt":[{"title":"适用场景","scenariosone":[{"txtone":"小型电商：支持访问50万PV,一段场景方案的介绍。","txttwo":"产品推荐","product":[{"name":"ECS 2核4G 40G数据盘 5M带宽","link":"#"}]}]}]}
{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"true","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"dns","iconImg":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","contentLink":"https://www.aliyun.com/product/dns","title":"阿里云DNS","des":"阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。","btn1":"产品控制台","link1":"https://dns.console.aliyun.com/ ","btn2":"开通云解析DNS","link2":"https://common-buy.aliyun.com/?commodityCode=alidns_pre&request=%7B%22version%22:%22version_personal%22,%22dns_security%22:%22no%22,%22domain_numbers%22:1,%22ord_time%22:%22%5B1,%5C%22Year%5C%22%5D%22%7D#/buy","btn3":"了解更多","link3":"https://www.aliyun.com/product/dns","infoGroup":[{"infoName":"爆款产品","infoContent":{"firstContentName":"云解析DNS","firstContentLink":"https://www.aliyun.com/ntms/wanwang/domain/dns","lastContentName":"全局流量管理GTM","lastContentLink":"https://www.aliyun.com/product/alidnsgtm"}},{"infoName":"热门活动","infoContent":{"firstContentName":"DNS全系产品免费试用","firstContentLink":"https://www.aliyun.com/activity/dns/dns_freetrial","lastContentName":"DNS新用户限时7.5折","lastContentLink":"https://www.aliyun.com/activity/dns/newdiscount"}},{"infoName":"爆款产品","infoContent":{"firstContentName":"VPC内网解析","lastContentName":"HTTPDNS/DoH解析","firstContentLink":"https://www.aliyun.com/product/pvtz","lastContentLink":"https://www.aliyun.com/activity/dns/pubdns_launch"}},{"infoName":"更多场景","infoContent":{"firstContentName":"混合云DNS","firstContentLink":"https://www.aliyun.com/activity/dns/hybrid_dns_scheme"}}],"link":"https://www.aliyun.com/product/dns"}],"card":[{"link":"#","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","title":"云服务器ECS","des":"云服务器（Elastic Compute Service，简称 ECS）是一种简单高效、处理能力可弹性伸缩的计算服务，帮助您快速构建更稳定、安全的应用，提升运维效率，降低 IT 成本，使您更专注于核心业务。","btn1":"FPGA云服务器","link1":"#","btn2":"GPU云服务器","link2":"#","tip":"新一代云服务器N5 （Xeon® (Skylake)处理器）上线！<a href=\"#\" target=\"_blank\">立即申请</a>"}],"search":[{"txt":"云数据库","link":"#"}],"infoCard":[{"fontSwitch":"shallow","bannerTitle":"","bannerUrl":"https://img.alicdn.com/tfs/TB1jLHUG1H2gK0jSZJnXXaT1FXa-1740-328.png","bannerContent":"","liveButtonName":"","liveButtonLink":"","homePageName":"","homePageLink":"","contentTitle":"","linkGroup":[{"linkContent":"","linkTo":"","link":""}]}],"title":{"mainTitle":"云原生助力企业全面拥抱云计算","subtitle":"这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍。","linkUrl":"#1","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB14iILhgDqK1RjSZSyXXaxEVXa-286-101.jpg","icon":"aliyun-icon-play","textColor":"light"},"dataList":[{"summary":"云原生助力企业全面拥抱云计算","author":"叔同（阿里巴巴研究员、阿里云原生应用平台负责人）","linksUrl":""}],"sceneCard":[{"title":"云计算试飞员老蒋开课啦！第一期：电商网站搭建","des":"这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。","btn":"立即观看","link":"#","image":"https://"}],"txt":[{"title":"适用场景","scenariosone":[{"txtone":"小型电商：支持访问50万PV,一段场景方案的介绍。","txttwo":"产品推荐","product":[{"name":"ECS 2核4G 40G数据盘 5M带宽","link":"#"}]}]}]}}
阿里云DNS
阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。
产品控制台
开通云解析DNS
了解更多
爆款产品
云解析DNS
全局流量管理GTM
热门活动
DNS全系产品免费试用
DNS新用户限时7.5折
爆款产品
VPC内网解析
HTTPDNS/DoH解析
更多场景
混合云DNS
{"optioninfo":{"dynamic":"true","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"dns","iconImg":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","contentLink":"https://www.aliyun.com/product/dns","title":"阿里云DNS","des":"阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。","btn1":"产品控制台","link1":"https://dns.console.aliyun.com/ ","btn2":"开通云解析DNS","link2":"https://common-buy.aliyun.com/?commodityCode=alidns_pre&request=%7B%22version%22:%22version_personal%22,%22dns_security%22:%22no%22,%22domain_numbers%22:1,%22ord_time%22:%22%5B1,%5C%22Year%5C%22%5D%22%7D#/buy","btn3":"了解更多","link3":"https://www.aliyun.com/product/dns","infoGroup":[{"infoName":"爆款产品","infoContent":{"firstContentName":"云解析DNS","firstContentLink":"https://www.aliyun.com/ntms/wanwang/domain/dns","lastContentName":"全局流量管理GTM","lastContentLink":"https://www.aliyun.com/product/alidnsgtm"}},{"infoName":"热门活动","infoContent":{"firstContentName":"DNS全系产品免费试用","firstContentLink":"https://www.aliyun.com/activity/dns/dns_freetrial","lastContentName":"DNS新用户限时7.5折","lastContentLink":"https://www.aliyun.com/activity/dns/newdiscount"}},{"infoName":"爆款产品","infoContent":{"firstContentName":"VPC内网解析","lastContentName":"HTTPDNS/DoH解析","firstContentLink":"https://www.aliyun.com/product/pvtz","lastContentLink":"https://www.aliyun.com/activity/dns/pubdns_launch"}},{"infoName":"更多场景","infoContent":{"firstContentName":"混合云DNS","firstContentLink":"https://www.aliyun.com/activity/dns/hybrid_dns_scheme"}}],"link":"https://www.aliyun.com/product/dns"}],"card":[{"link":"#","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","title":"云服务器ECS","des":"云服务器（Elastic Compute Service，简称 ECS）是一种简单高效、处理能力可弹性伸缩的计算服务，帮助您快速构建更稳定、安全的应用，提升运维效率，降低 IT 成本，使您更专注于核心业务。","btn1":"FPGA云服务器","link1":"#","btn2":"GPU云服务器","link2":"#","tip":"新一代云服务器N5 （Xeon® (Skylake)处理器）上线！<a href=\"#\" target=\"_blank\">立即申请</a>"}],"search":[{"txt":"云数据库","link":"#"}],"infoCard":[{"fontSwitch":"shallow","bannerTitle":"","bannerUrl":"https://img.alicdn.com/tfs/TB1jLHUG1H2gK0jSZJnXXaT1FXa-1740-328.png","bannerContent":"","liveButtonName":"","liveButtonLink":"","homePageName":"","homePageLink":"","contentTitle":"","linkGroup":[{"linkContent":"","linkTo":"","link":""}]}],"title":{"mainTitle":"云原生助力企业全面拥抱云计算","subtitle":"这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍。","linkUrl":"#1","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB14iILhgDqK1RjSZSyXXaxEVXa-286-101.jpg","icon":"aliyun-icon-play","textColor":"light"},"dataList":[{"summary":"云原生助力企业全面拥抱云计算","author":"叔同（阿里巴巴研究员、阿里云原生应用平台负责人）","linksUrl":""}],"sceneCard":[{"title":"云计算试飞员老蒋开课啦！第一期：电商网站搭建","des":"这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。","btn":"立即观看","link":"#","image":"https://"}],"txt":[{"title":"适用场景","scenariosone":[{"txtone":"小型电商：支持访问50万PV,一段场景方案的介绍。","txttwo":"产品推荐","product":[{"name":"ECS 2核4G 40G数据盘 5M带宽","link":"#"}]}]}]}
{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"true","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"dns","iconImg":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","contentLink":"https://www.aliyun.com/product/dns","title":"阿里云DNS","des":"阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。","btn1":"产品控制台","link1":"https://dns.console.aliyun.com/ ","btn2":"开通云解析DNS","link2":"https://common-buy.aliyun.com/?commodityCode=alidns_pre&request=%7B%22version%22:%22version_personal%22,%22dns_security%22:%22no%22,%22domain_numbers%22:1,%22ord_time%22:%22%5B1,%5C%22Year%5C%22%5D%22%7D#/buy","btn3":"了解更多","link3":"https://www.aliyun.com/product/dns","infoGroup":[{"infoName":"爆款产品","infoContent":{"firstContentName":"云解析DNS","firstContentLink":"https://www.aliyun.com/ntms/wanwang/domain/dns","lastContentName":"全局流量管理GTM","lastContentLink":"https://www.aliyun.com/product/alidnsgtm"}},{"infoName":"热门活动","infoContent":{"firstContentName":"DNS全系产品免费试用","firstContentLink":"https://www.aliyun.com/activity/dns/dns_freetrial","lastContentName":"DNS新用户限时7.5折","lastContentLink":"https://www.aliyun.com/activity/dns/newdiscount"}},{"infoName":"爆款产品","infoContent":{"firstContentName":"VPC内网解析","lastContentName":"HTTPDNS/DoH解析","firstContentLink":"https://www.aliyun.com/product/pvtz","lastContentLink":"https://www.aliyun.com/activity/dns/pubdns_launch"}},{"infoName":"更多场景","infoContent":{"firstContentName":"混合云DNS","firstContentLink":"https://www.aliyun.com/activity/dns/hybrid_dns_scheme"}}],"link":"https://www.aliyun.com/product/dns"}],"card":[{"link":"#","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","title":"云服务器ECS","des":"云服务器（Elastic Compute Service，简称 ECS）是一种简单高效、处理能力可弹性伸缩的计算服务，帮助您快速构建更稳定、安全的应用，提升运维效率，降低 IT 成本，使您更专注于核心业务。","btn1":"FPGA云服务器","link1":"#","btn2":"GPU云服务器","link2":"#","tip":"新一代云服务器N5 （Xeon® (Skylake)处理器）上线！<a href=\"#\" target=\"_blank\">立即申请</a>"}],"search":[{"txt":"云数据库","link":"#"}],"infoCard":[{"fontSwitch":"shallow","bannerTitle":"","bannerUrl":"https://img.alicdn.com/tfs/TB1jLHUG1H2gK0jSZJnXXaT1FXa-1740-328.png","bannerContent":"","liveButtonName":"","liveButtonLink":"","homePageName":"","homePageLink":"","contentTitle":"","linkGroup":[{"linkContent":"","linkTo":"","link":""}]}],"title":{"mainTitle":"云原生助力企业全面拥抱云计算","subtitle":"这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍，这是一段副标题介绍。","linkUrl":"#1","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB14iILhgDqK1RjSZSyXXaxEVXa-286-101.jpg","icon":"aliyun-icon-play","textColor":"light"},"dataList":[{"summary":"云原生助力企业全面拥抱云计算","author":"叔同（阿里巴巴研究员、阿里云原生应用平台负责人）","linksUrl":""}],"sceneCard":[{"title":"云计算试飞员老蒋开课啦！第一期：电商网站搭建","des":"这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。","btn":"立即观看","link":"#","image":"https://"}],"txt":[{"title":"适用场景","scenariosone":[{"txtone":"小型电商：支持访问50万PV,一段场景方案的介绍。","txttwo":"产品推荐","product":[{"name":"ECS 2核4G 40G数据盘 5M带宽","link":"#"}]}]}]}}
阿里云DNS
阿里云DNS全系产品：包括云解析DNS、内网解析PrivateZone、全局流量管理GTM、辅助DNS、专有云DNS、公共DNS。全面覆盖公网、内网、专有云网络的各种域名解析场景。
产品控制台
开通云解析DNS
了解更多
爆款产品
云解析DNS
全局流量管理GTM
热门活动
DNS全系产品免费试用
DNS新用户限时7.5折
爆款产品
VPC内网解析
HTTPDNS/DoH解析
更多场景
混合云DNS
