无法在端口 25 上连接 smtp 服务器 [英] Could not connect smtp server on port 25

问题描述

我使用的是 Windows 7 PC

I'm using a windows 7 PC

当我尝试通过 telnet 命令测试 smtp 连接时:

When I try to test an smtp connection through telnet giving the command:

telnet smtp.gmail.com 25

它显示一条消息:

could not establish connection to host, on port 25: connection failed"

如何让我的 PC 在端口 25 上与 smtp 主机建立连接?

How do I get my PC to establish a connection with the smtp host on port 25?

我检查了防火墙阻塞端口的可能性，并尝试在端口 465 或 587 上使用 telnet 命令.

I checked the possibility of a Firewall blocking the port and also try using the telnet command on ports 465 or 587.

推荐答案

它对我有用.也许您的 ISP 有阻止出站端口 25 连接的策略，除了他们的官方外发 SMTP 服务器.这就是为什么许多服务支持SMTP 服务的备用端口号.你没有说结果是什么对于备用端口，因此很难确定这是否是您的问题.

It works for me. Perhaps your ISP has a policy of blocking outbound port 25 connections, except to their official outgoing SMTP servers. That's why many services support alternate port numbers for their SMTP service. You didn't say what the results were for the alternate ports, so it's hard to say for sure whether that's your problem.

这篇关于无法在端口 25 上连接 smtp 服务器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！