SMTP error: "Client does not have permission to submit mail to this server"
- by Raj Kumar
I'm getting the following error while sending email. What could be the cause?
Client does not have permission to
submit mail to this server. The server
response was: 5.5.1 STARTTLS may not
be repeated.
Here's the stack trace...
Stack Trace
at System.Net.Mail.StartTlsCommand.CheckResponse(SmtpStatusCode statusCode, String response)
at System.Net.Mail.StartTlsCommand.Send(SmtpConnection conn)
at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port)
at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port)
at System.Net.Mail.SmtpClient.GetConnection()
at System.Net.Mail.SmtpClient.Send(MailMessage message)
I'm connecting to smtp.gmail.com with SSL on port 587 / 465