不允许使用邮箱名称。 服务器响应为: You are not authorized to send mail......
自己写了个发邮件的系统，原来调试好好的。今天调试时说：

"不允许使用邮箱名称。 服务器响应为: You are not authorized to send mail, au... "
大家谁遇到过这样的情况，指导一下。以下是报错的代码：
Class Mail
{
...........
...........
public bool Send(string subject,string message)
{

try
{

mailMessage.From = new MailAddress(adminEmail);

if (replyTo != null)
{
if (replyTo != " ")
{
mailMessage.ReplyTo = new MailAddress(replyTo);
}
}
mailMessage.Sender = mailMessage.From;
if(flag)
{
mailMessage.IsBodyHtml = true;
}
else
{
mailMessage.IsBodyHtml = false;
}
mailMessage.Subject = subject;

mailMessage.Body = message;
SmtpClient server = new SmtpClient(smtpServer);
if (port > -1)
{
server.Port = port;
}
server.Credentials = new System.Net.NetworkCredential(userName,password);

server.Send(mailMessage);

exception = "Mail send success! ";

return true;
}
catch(Exception e)
{
exception = e.Message;
return false;
}
}
}

[解决办法]
up
[解决办法]
邮件服务器需要身份验证
[解决办法]
同样的问题,求高手,UP~
[解决办法]
我用这个从来就没有发成功过。。。
[解决办法]
System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient( "smtp服务器 ");
client.UseDefaultCredentials = true;//设置为发送认证消息
client.Credentials = new System.Net.NetworkCredential( "用户名 ", "密码 ");//认证消息
System.Net.Mail.MailMessage mess = new System.Net.Mail.MailMessage();
mess.From = new System.Net.Mail.MailAddress( "发信人地址 ", "要显示的发信人的名称 ");
mess.To.Add(new System.Net.Mail.MailAddress( "收信人地址 ", "要显示的收信人的名称 "));
mess.Subject = "主题 ";
mess.Body = "正文 ";
try
{
client.Send(mess);
MessageBox.Show( "发送成功完成 ");
}

catch (Exception ex)
{
MessageBox.Show(ex.Message);
}

注意:
client.UseDefaultCredentials = true 此属性的设置一定要放在client.Credentials = new System.Net.NetworkCredential( "用户名 ", "密码 ");之前,否则就无法发送成功.