What about the port? I'm using gmail for bussines and my smtp port is 465. What happen if you try to POP auth before the smtp?
HTH Claudio M. E. Bastos Iorio -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ross Sent: Monday, November 21, 2011 5:26 PM To: DotNetDevelopment, VB.NET, C# .NET, ADO.NET, ASP.NET, XML, XML Web Services,.NET Remoting Subject: [DotNetDevelopment] GMail for Business I've been using the following snippet for a while now to send email via Google's SMTP server: SmtpClient smtp = new SmtpClient { Host = "smtp.gmail.com", Port = 587, EnableSsl = true, DeliveryMethod = SmtpDeliveryMethod.Network, UseDefaultCredentials = false, Credentials = new NetworkCredential(fromAddress.Address, fromPassword) //Credentials = new NetworkCredential(fromAddress.Address, fromPassword) }; using (MailMessage message = new MailMessage(fromAddress, toAddress) { Subject = subject, Body = body }) { smtp.Send(message); } Works great for regular GMail addresses. However, if I swap the "from" credentials to a GMail for business client, I start getting the following exception: System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at And no, that message isn't truncated. That's all it gives me. In my naive mind, GMail and GMail for Business ought to use the same SMTP gateway. My question is, is that assumption valid? Is the setup different for the business version? Is there something (hopefully) simple I'm missing? Thanks in advance, Ross -- You received this message because you are subscribed to the Google Groups "DotNetDevelopment, VB.NET, C# .NET, ADO.NET, ASP.NET, XML, XML Web Services,.NET Remoting" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/dotnetdevelopment?hl=en?hl=en or visit the group website at http://megasolutions.net -- You received this message because you are subscribed to the Google Groups "DotNetDevelopment, VB.NET, C# .NET, ADO.NET, ASP.NET, XML, XML Web Services,.NET Remoting" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/dotnetdevelopment?hl=en?hl=en or visit the group website at http://megasolutions.net
