asp.net SMTP服务器要求安全连接或客户端未通过身份验证。服务器响应为：5.5.1需要验证 [英] asp.net The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

问题描述

您好，我知道这个问题有点多余，但我在这里不同的体验它是创造帐户asp.net后发送电子邮件我的code

hi i know this question is a bit redundant but i am experiencing it differently here is my code on sending email after creation of account on asp.net

Dim newreg As MembershipUser = Membership.GetUser(context.Request("username"))
                Dim newid As Guid
                If newreg.ProviderUserKey IsNot Nothing Then
                    newid = DirectCast(newreg.ProviderUserKey, Guid)
                End If

                Dim body As String = String.Empty
                Dim reader As StreamReader = New StreamReader(context.Server.MapPath("~/Account/email.htm"))
                body = reader.ReadToEnd
                body = body.Replace("{UserName}", context.Request("username").ToString)
                body = body.Replace("{Url}", "http://wwww.123.com/Account/activate.aspx?id=" & context.Request("username").ToString & "&usertype=" & givetype(context.Request("username")) & "&actid=" & newid.ToString)

                Dim mailMessage As MailMessage = New MailMessage
                mailMessage.From = New MailAddress(ConfigurationManager.AppSettings("UserName"))
                mailMessage.Subject = "Account Activation"
                mailMessage.Body = body
                mailMessage.IsBodyHtml = True
                mailMessage.To.Add(New MailAddress(context.Request("email").ToString))
                Dim smtp As SmtpClient = New SmtpClient
                smtp.Host = ConfigurationManager.AppSettings("Host")
                smtp.EnableSsl = True
                Dim NetworkCred As System.Net.NetworkCredential = New System.Net.NetworkCredential
                NetworkCred.UserName = ConfigurationManager.AppSettings("UserName")
                NetworkCred.Password = ConfigurationManager.AppSettings("Password")
                smtp.UseDefaultCredentials = False
                smtp.Credentials = NetworkCred
                smtp.Port = Integer.Parse(ConfigurationManager.AppSettings("Port"))
                smtp.Send(mailMessage)

奇怪的是当我运行在本地主机上的Gmail网站允许，但是当我在一个VPS运行的网站它拒绝并给出了此错误

the odd thing is when i run the website on localhost gmail allows it but when i run the website on a vps it rejects and gives this error

SMTP服务器要求安全连接或客户端未通过身份验证。服务器响应为：5.5.1需要验证

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required

任何帮助会做TNX

推荐答案

得到它的工作的问题Gmail是阻止该请求发送电子邮件，因为2步验证我创建的应用程序密码，现在Gmail是不阻断请求发送电子邮件，希望这可以帮助，如果有人会遇到与Gmail相同的问题。

got it working the problem was gmail is blocking the request to send the email because of the 2 step verification i created a password for the app and now gmail is not blocking the request to send e-mails hope this helps if somebody will encounter the same issue with gmail

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