outlook无法发送邮件
微软官方对这个错误报告是这么解释的：
The most common problems sending/receiving email are,
1. You are using the wrong mail server settings. Check your ISP's website (or that of your web hosting company if your mail host is other than your ISP) for the correct mail server settings for POP (Incoming) and SMTP (outgoing). Most ISP's will also have a "walkthrough" to show you how to set up mail using popular email clients such as Outlook Express, Eudora, and Thunderbird. If they don't have instructions for Windows Mail yet, use the ones for Outlook Express.
2. You have "outgoing mail server requires authentication" checked when it does not or vice versa.
3. You are trying to send mail through an SMTP server that isn't your regular ISP; i.e., you are trying to send mail through AT&T's server when your ISP is Comcast. Some ISP's care about this and some don't.
4. Your user name and/or password are incorrect. Yes, you do have a user name and password for your email. It probably has just been a long time since you set this up (or someone else set it up for you) and you've forgotten. Look through your ISP-related documentation or contact your ISP. They will be able to tell you your user name and assign you a new password.
5. Your antivirus is set to scan emails and/or is one that causes problems with your operating system (such as McAfee in Vista). Turn this option off since it doesn't provide you any extra protection and tends to cause problems.
简单来说，报这个错的可能性如下：
POP或者SMTP服务器地址设置不正确，你可以到你绑定的公网邮箱的帮助里去查看正确设置
你需要去掉“发送邮件需要验证”的勾
你可能在使用SMTP协议发送邮件，但是在某些ISP供应商来说是不允许的（基本可以排除掉这条）
你的用户名/密码错误
你的杀毒软件会对邮件进行扫描，从而阻止你发送
你可以分别排除一下1,2,4,5这几个选项。有问题可回复。
