System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: The connection was closed. at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) at System.Net.Mail.S...
1 System.Net.Mail.SmtpException: Failure sending mail. ---> System.InvalidOperationException: Asynchronous operations are not allowed inthis context. Page starting an asynchronous operation has to have the Async attributesettotrueand an asynchronousop 甭理他什么页面需要异步,直接把发邮件代码仍到 Task....
System.Web.Mail.SmtpMail虽然已被标记为已过期,但是毕竟他支持新的SSL/TLS协议。 不过,需要注意的是,System.Web.Mail.SmtpMail,只适用于 .NET Framework(>=2.0) 示例代码: usingSystem.Web.Mail;usingSystem;namespaceKen.IO.Util{classProgram{publicstaticvoidMain(string[] args){ MailMessage mmsg =newMail...
目前微软MSDN已经将System.Net.Mail.SmtpClient标记为已过期(obsolete),但源码中并未标记,也并未给出替代实现。 二、解决办法 1、使用System.Web.Mail System.Web.Mail.SmtpMail虽然已被标记为已过期,但是毕竟他支持新的SSL/TLS协议。 不过,需要注意的是,System.Web.Mail.SmtpMail,只适用于 .NET Framework(>=2....
通过System.Net.Mail使用SSL协议发送邮件失败并报错System.Net.Mail.SmtpException: Failure sending mail 详细报错信息: 代码语言:javascript 复制 System.Net.Mail.SmtpException:Failure sending mail.--->System.IO.IOException:Unable to read data from the transport connection:The connection was closed.at System...
Create .csv MailMessage Attachment from List<String> Create .sln and .csproj programmatically in c#, How? create a c# exe file Create a Conditional Calculated Value in Class Create a Dialog box with YES NO CANCEL Options C# Create a Excell file with C# Create a folder on client machine fr...
System.Net.Mail.SmtpException: "Failure sending mail."Inner ExceptionIOException: Unable to read data from the transport connection:net_io_connectionclosed.===Private Sub xxxxxDim MailMessage As New MailMessage Dim client As SmtpClientIf USE_SSL = True Then SMTPServer.Port = 465 SMTPServer.Enabl...
Below is the content for a simple executable registry file that I put together that will make the 2 new settings and the settings already shown on the thread above (i.e. this makes all of the necessary Registry settings*):Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\...
过程中的第一步是MAIL命令,< reverse-path >包括源邮箱。MAIL FROM:此命令告诉接收者新的发送操作已经开始,请复位所有状态表和缓冲区。它给出反向路径以进行错误信息返回。如果请求被接收,接收方返回一个250 OK应答。中不止包括了邮箱,它包括了主机和源邮箱的反向路由,其中的第一个主机就是发送此命令的主机。
SMTP错误码/建议解决方法,SMTP错误码/建议解决方法错误总表4201.TimeoutCommunicationProblemEncounteredDuringTransmission.ThieIsaNovellGroupwiseSmtpError2.TcpReadError3.TcpWriteError在联机时发生通讯中断的问题;NovellGroupWiseSMTP服务器的