csharp
复制代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Mail;
using System.Security.Cryptography.X509Certificates;
using System.Net.Security;
namespace Smtp
{
public class Mail
{
private string sender;
/// <summary>
/// 发送人
/// </summary>
public string Sender
{
get
{
return sender;
}
set
{
sender = value;
}
}
private string senderMail;
/// <summary>
/// 发送人邮箱
/// </summary>
public string SenderMail
{
get
{
return senderMail;
}
set
{
senderMail = value;
}
}
private string senderPw;
/// <summary>
/// 发送人密码
/// </summary>
public string SenderPw
{
get
{
return senderPw;
}
set
{
senderPw = value;
}
}
private string smtpServer;
/// <summary>
/// smtpServer地址
/// </summary>
public string SmtpServer
{
get
{
return smtpServer;
}
set
{
smtpServer = value;
}
}
/// <summary>
///
/// </summary>
/// <param name="sender">委托发件人</param>
/// <param name="sender">委托发件人邮件地址</param>
/// <param name="senderPw">密码</param>
/// <param name="ewsUrl">smtpServer地址</param>
public Mail(string sender, string senderMail, string senderPw, string smtpServer)
{
this.sender = sender;
this.senderMail = senderMail;
this.senderPw = senderPw;
this.smtpServer = smtpServer;
}
public Mail()
{
}
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="title"></param>
/// <param name="body"></param>
/// <param name="receiver"></param>
public void Send(string title, string body, string[] receiver)
{
SmtpClient _smtpClient = new SmtpClient();
_smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式
_smtpClient.Host = this.smtpServer; ;//指定SMTP服务器
_smtpClient.EnableSsl = true;
_smtpClient.Port = 587;
_smtpClient.Credentials = new System.Net.NetworkCredential(this.sender, this.senderPw);//用户名和密码
for (int i = 0; i < receiver.Length; i++)
{
//ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(ValidateServerCertificate);
ServicePointManager.ServerCertificateValidationCallback =
delegate (Object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; };
MailMessage _mailMessage = new MailMessage(this.senderMail, receiver[i]);
_mailMessage.Subject = title;//主题
_mailMessage.Body = body;//内容
_mailMessage.BodyEncoding = System.Text.Encoding.UTF8;//正文编码
_mailMessage.IsBodyHtml = true;//设置为HTML格式
_mailMessage.Priority = MailPriority.High;//优先级
//Attachment am = new Attachment(attachment, "attachment");
//_mailMessage.Attachments.Add(am);
_smtpClient.Send(_mailMessage);
}
}
public static bool ValidateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
//if (sslPolicyErrors == SslPolicyErrors.None)
// return true;
//else
// return true;
// If there are no errors, then everything went smoothly.
if (sslPolicyErrors == SslPolicyErrors.None)
return true;
// Note: MailKit will always pass the host name string as the `sender` argument.
//var host = (string)sender;
string host = sender as string;
if (host == null)
{
// Handle the case where sender is not a string
Console.WriteLine("Sender parameter is not a valid string.");
return false;
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateChainErrors) != 0)
{
// This means that there are errors in the certificate chain. You can inspect the chain errors and handle them accordingly.
foreach (X509ChainStatus chainStatus in chain.ChainStatus)
{
Console.WriteLine("Certificate chain error: " + chainStatus.StatusInformation);
}
return false;
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNotAvailable) != 0)
{
// This means that the remote certificate is unavailable. Notify the user and return false.
Console.WriteLine("The SSL certificate was not available for {0}", host);
return false;
}
if ((sslPolicyErrors & SslPolicyErrors.RemoteCertificateNameMismatch) != 0)
{
// This means that the server's SSL certificate did not match the host name that we are trying to connect to.
var certificate2 = certificate as X509Certificate2;
var cn = certificate2 != null ? certificate2.GetNameInfo(X509NameType.SimpleName, false) : certificate.Subject;
Console.WriteLine("The Common Name for the SSL certificate did not match {0}. Instead, it was {1}.", host, cn);
return false;
}
// The only other errors left are chain errors.
Console.WriteLine("The SSL certificate for the server could not be validated for the following reasons:");
// The first element's certificate will be the server's SSL certificate (and will match the `certificate` argument)
// while the last element in the chain will typically either be the Root Certificate Authority's certificate -or- it
// will be a non-authoritative self-signed certificate that the server admin created.
foreach (var element in chain.ChainElements)
{
// Each element in the chain will have its own status list. If the status list is empty, it means that the
// certificate itself did not contain any errors.
if (element.ChainElementStatus.Length == 0)
continue;
Console.WriteLine("\u2022 {0}", element.Certificate.Subject);
foreach (var error in element.ChainElementStatus)
{
// `error.StatusInformation` contains a human-readable error string while `error.Status` is the corresponding enum value.
Console.WriteLine("\t\u2022 {0}", error.StatusInformation);
}
}
return false;
}
/// <summary>
/// 发送邮件，带附件
/// </summary>
/// <param name="title"></param>
/// <param name="body"></param>
/// <param name="receiver"></param>
/// <param name="attachment">附件</param>
public void Send(string title, string body, string receiver, System.IO.Stream attachment)
{
SmtpClient _smtpClient = new SmtpClient();
_smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式
_smtpClient.Host = this.smtpServer; ;//指定SMTP服务器
_smtpClient.Credentials = new System.Net.NetworkCredential(this.sender, this.senderPw);//用户名和密码
MailMessage _mailMessage = new MailMessage(this.senderMail, receiver);
_mailMessage.Subject = title;//主题
_mailMessage.Body = body;//内容
_mailMessage.BodyEncoding = System.Text.Encoding.UTF8;//正文编码
_mailMessage.IsBodyHtml = true;//设置为HTML格式
_mailMessage.Priority = MailPriority.High;//优先级
Attachment am = new Attachment(attachment, "attachment");
_mailMessage.Attachments.Add(am);
_smtpClient.Send(_mailMessage);
}
}
}