我以前一直用System.Web.Mail发送邮件没出现过什么问题
后来用System.Net.Mail来发送邮件,同样的smtp地址,邮件帐号和密码,就发不出去了。
错误信息如下:
System.Net.Mail.SmtpException: Authentication failed.
有经验的说说大概是啥原因那?!
后来用System.Net.Mail来发送邮件,同样的smtp地址,邮件帐号和密码,就发不出去了。
错误信息如下:
System.Net.Mail.SmtpException: Authentication failed.
有经验的说说大概是啥原因那?!
添加引用---在system32中的 cdosys.dll 这个库using CDO;CDO.Message oMsg = new CDO.Message();
oMsg.From = "发信人地址";
oMsg.To = "接收人地址";
oMsg.Subject = "标题";
oMsg.HTMLBody = "正文内容";
CDO.IConfiguration iConfg = oMsg.Configuration;
ADODB.Fields oFields = iConfg.Fields;
oFields["http://schemas.microsoft.com/cdo/configuration/sendusing"].Value = 2;
oFields["http://schemas.microsoft.com/cdo/configuration/sendemailaddress"].Value = to;
oFields["http://schemas.microsoft.com/cdo/configuration/smtpaccountname"].Value = "发信人地址";
oFields["http://schemas.microsoft.com/cdo/configuration/sendusername"].Value = "发信人帐号";
oFields["http://schemas.microsoft.com/cdo/configuration/sendpassword"].Value = "发信人密码";
oFields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"].Value = 1;
oFields["http://schemas.microsoft.com/cdo/configuration/languagecode"].Value = 0x0804;
oFields["http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value = "邮件服务器"
oFields.Update();
oMsg.BodyPart.Charset = "gb2312";
oMsg.HTMLBodyPart.Charset = "gb2312";
oMsg.Send();
oMsg = null;
"to" 是 "接收人地址"
oFields["http://schemas.microsoft.com/cdo/configuration/sendemailaddress"].Value = "接收人地址";
using System.Net.Mail
最好在引用一下
using System.Text
using System.IO
///添加发件人地址
MailMessage mailMsg = new MailMessage();
mailMsg.From = new MailAddress("[email protected]");///添加收件人地址
mailMsg.To.Add("[email protected]");///添加邮件主题
mailMsg.Subject = “邮件”;
mailMsg.SubjectEncoding = Encoding.UTF8;///添加邮件内容
mailMsg.Body = "ffffff";
mailMsg.BodyEncoding = Encoding.UTF8;///发送
public int SenderMail(MailMessage mail)
{
///定义发送邮件的Client
SmtpClient client = new SmtpClient();
///设置邮件服务器主机的IP地址
client.Host =
///设置邮件服务器的端口
client.Port =
///配置发送邮件的属性
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
///超时时间
client.Timeout = 10000000;
///发送邮件
client.Send(mail);
return (0);
}
oMsg.From = new System.Net.Mail.MailAddress("[email protected]"); // 发送邮件的邮件地址
oMsg.Subject = "ccc"; // 主题
oMsg.IsBodyHtml = false; // 是不是HTML邮件
oMsg.ReplyTo = oMsg.From; // 回信地址
oMsg.Priority = System.Net.Mail.MailPriority.Normal; // 优先等级
oMsg.BodyEncoding = Encoding.UTF8; // 邮件编码
oMsg.To.Add("[email protected]");
System.Net.Mail.SmtpClient smtp = new System.Net.Mail.SmtpClient("xxx.xxx.xxx.xxx"); // 邮件服务器
smtp.Port = 25; // 端口号
smtp.UseDefaultCredentials = false; // 是否使用本地验证
System.Net.NetworkCredential SMTPUserInfo = new System.Net.NetworkCredential();
SMTPUserInfo.UserName = "username"; // 用户名
SMTPUserInfo.Password = "password"; // 登录密码
smtp.Credentials = SMTPUserInfo; // 验证信息
smtp.EnableSsl = false;
smtp.Send(oMsg);