我采用了.net 的自带组件System.Net.Mail发送邮件,主要是在客户注册网站成功的时候发条欢迎邮件,最近邮件无法发送了,看了下腾讯smtp邮件配置,所有的邮件发送都换成ssl了,之前用的是25端口,现在换成了465或587,于是修改代码如下:
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MailMessage msgMail = new MailMessage( "发件箱" , "收件箱" , "邮件标题" , "邮件内容" );
SmtpClient smtp = new SmtpClient( "smtp.qq.com" , 465);
smtp.EnableSsl = true ;
smtp.DeliveryMethod = SmtpDeliveryMethod.Network; smtp.Credentials = new System.Net.NetworkCredential( "发件箱" , "发件箱登录密码" );
try { smtp.Send(msgMail); } catch (Exception ex)
{ Console.WriteLine( "发送完毕......" );
} |
这样还是不行,报操作已超时错误 在国外的技术网站上看到一句话System.Net.Mail支持Explicit SSL但是不支持Implicit SSL,然后查了下关于这两个模式的资料,我按照我理解的说一下:
Explicit SSL 发起于未加密的25,然后进行一个starttl握手,最终切换到加密的连接。
Implicit SSL 直接从指定的端口发起starttl握手。
既然指定了端口,那么应该就是使用了Implicit SSL,不知道微软什么时候能更新下System.net.mail,System.net.mail能在邮件中嵌入图片的。问题到了这里,那是不是就没有办法利用腾讯邮箱发邮件了呢?答案肯定是否定的,foxmail不就可以配置发送邮件吗?我们可以利用CDO.Message和System.web.mail发送邮件。
C#利用CDO.Message发送邮件
如何引用CDO.Message? cod.message的引用位置: C:\Windows\System32\cdosys.dll
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CDO.Message objMail = new CDO.Message();
try { objMail.To = "接收邮件账号" ;
objMail.From = "发送邮件账号" ;
objMail.Subject = "subject" ; //邮件主题string strHTML = @"";
strHTML = strHTML + "这里可以填写html内容" ;
objMail.HTMLBody = strHTML; //邮件内容
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpserverport" ].Value = 465;//设置端口
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpserver" ].Value = "smtp.qq.com" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/sendemailaddress" ].Value = "发送邮件账号" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpuserreplyemailaddress" ].Value = "发送邮件账号" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpaccountname" ].Value = "发送邮件账号" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/sendusername" ].Value = "发送邮件账号" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/sendpassword" ].Value = "发送邮件账号登录密码" ;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpauthenticate" ].Value = 1;
objMail.Configuration.Fields[ "http://schemas.microsoft.com/cdo/configuration/smtpusessl" ].Value = "true" ;//这一句指示是否使用ssl
objMail.Configuration.Fields.Update(); objMail.Send(); } catch (Exception ex) { throw ex; }
finally { }
System.Runtime.InteropServices.Marshal.ReleaseComObject(objMail); objMail = null ;
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C#利用System.web.mail发送邮件
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System.Web.Mail.MailMessage mail = new System.Web.Mail.MailMessage();
try { mail.To = "收件人邮箱" ;
mail.From = "发件人邮箱" ;
mail.Subject = "subject" ;
mail.BodyFormat = System.Web.Mail.MailFormat.Html; mail.Body = "body" ;
mail.Fields.Add( "http://schemas.microsoft.com/cdo/configuration/smtpauthenticate" , "1" ); //basic authentication
mail.Fields.Add( "http://schemas.microsoft.com/cdo/configuration/sendusername" , "发件人邮箱" ); // set your username here
mail.Fields.Add( "http://schemas.microsoft.com/cdo/configuration/sendpassword" , "发件人邮箱密码" ); // set your password here
System.Web.Mail.SmtpMail.SmtpServer = "smtp.qq.com" ;
System.Web.Mail.SmtpMail.Send(mail); //return true; } catch (Exception ex)
{ ex.ToString(); } |