阿里云
>
服务器
>
发邮件 服务器
>
发邮件 服务器 发送
>
为什么发邮件服务器发送
为什么发邮件服务器发送
Esc
服务器
，
为什么
不能
发送
SMTP 的
邮件
？
已采用SSL 465端口，安全策略中端口也开放了，采用DEMO代码也测试过了，本地可以
发送
，部署到
服务器
上就不行，提示，链接不了 smtp.sina.com:465
服务器
，
为什么发邮件
出现退信原因：在向对方
服务器发送
时出现未知错误。
很抱歉，您
发送
的
邮件
被退回，以下是该
邮件
的相关信息：时 间Mon,30 Nov 2015 13:34:34+0800 退信原因 在向对方
服务器发送
时出现未知错误。(2)the mta server of mail.ru-mxs.mail.ru(94.100.180.150)reply:421 Problem resolving DNS for ...
为什么
给客户
发邮件
出现退信原因：在向对方
服务器发送
时出现未知错误。
给其他的国外客户
发邮件
都没问题，就是给其中的一个国外客户
发邮件
，如果不添加附件的话，会
发送
成功，一旦添加附件，立马就会被退信。退信原因：在向对方
服务器发送
时出现未知错误。请帮忙解决。另外，我发现好像是只要给固定的客户
发邮件
...
我
服务器
已经开通了25跟465的端口，
为什么
还是无法
发送邮件
我服务器已经开通了25跟465的端口，
为什么
还是无法
发送邮件
，
服务器
是47.112.5.69 账号：administrator 密码：Qwe321a69
1
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云服务器ECS
云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。
产品详情页
ECS控制台
在线咨询
最新活动
百亿补贴独家补贴通道
精选特惠低至1折起
产品入门
ECS选型推荐
ECS学习路径
热门产品
GPU云服务器低至3折起
第七代企业级产品
最佳实践
新产品s6首发解密
迁云工具一键上云
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云服务器ECS
云服务器 ECS（Elastic Compute Service）是一种弹性可伸缩的计算服务，助您降低 IT 成本，提升运维效率，使您更专注于核心业务创新。
产品详情页
ECS控制台
在线咨询
最新活动
百亿补贴独家补贴通道
精选特惠低至1折起
产品入门
ECS选型推荐
ECS学习路径
热门产品
GPU云服务器低至3折起
第七代企业级产品
最佳实践
新产品s6首发解密
迁云工具一键上云
