使用System.Web.Mail通过需验证的邮件服务器发送邮件

using System;
using System.Web.Mail;

namespace ZZ
{
public class SystemMail
{
private string _adminEmail;
private string _smtpServer = "localhost";
private string _password;
private string _userName;

public SystemMail()
{
}

public string AdminEmail
{
get{return _adminEmail;}
set{_adminEmail = value;}
}

public string SmtpServer
{
get{return _smtpServer;}
set{_smtpServer = value;}
}

public string Password
{
get{return _password;}
set{_password = value;}
}

public string UserName
{
get{return _userName;}
set{_userName = value;}
}

public bool Send(string to, string from, string subject, string message)
{
try
{
MailMessage em = new MailMessage();
em.To = to;
em.From = from;
em.Subject = subject;
em.Body = message;

if(this.UserName != null && this.Password != null)
{
em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1"); //basic authentication
em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", this.UserName); //set your username here
em.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", this.Password); //set your password here
}

SmtpMail.SmtpServer = this.SmtpServer;
SmtpMail.Send(em);
return true;
}
catch
{
return false;
}
}
}
}