Sending mail from Gmail via SMTP from asp.net page

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I'm hoping after a month of trying to resolve this with no success, this site will be my saviour?

I have an aspx page running on the asp.net development server built in to visual web dev 2010.

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

This always happens on this line: SMTPServer.Send(myMessage)

my web.config: (the password is correct, I have just hidden it here for obvious reasons)

XML

<system.net>
        <mailSettings>
            <smtp>
                <network defaultCredentials ="false" host="smtp.gmail.com" port="587" userName="[DELETED]@gmail.com" password="********" />
            </smtp>
        </mailSettings>
    </system.net>

code behind:

VB

'create an SMTP client object
        Dim SMTPServer As New System.Net.Mail.SmtpClient(host)
        'configuration for the Google mail server
        SMTPServer.Host = host
        SMTPServer.Port = port
        SMTPServer.EnableSsl = True
        SMTPServer.DeliveryMethod = Net.Mail.SmtpDeliveryMethod.Network
        SMTPServer.UseDefaultCredentials = defaultCredentials
        SMTPServer.Credentials = New System.Net.NetworkCredential("username", "password")

Posted 2-Jan-11 0:19am

mnemonic69

Updated 2-Jan-11 0:30am

OriginalGriff

v3

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#realJSOP 2-Jan-11 6:22am

When you have code snippets surrounded by <pre> tags, make sure you uncheck the "Ignore HTML" box when entering your question.

OriginalGriff 2-Jan-11 6:31am

...And don't post your email to any public forum, unless you really like spam!

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Estys · Accepted Answer · 2011-01-02T00:46:00

I tried this and it worked :

Dim Email As New System.Net.Mail.MailMessage("myMail@gmail.com", "otherMail@hccnet.nl")
Email.Subject = "test subject"
Email.Body = "this is a test"
Dim mailClient As New System.Net.Mail.SmtpClient()
Dim basicAuthenticationInfo As New System.Net.NetworkCredential("myUsername", "myPassword")
mailClient.Host = "smtp.gmail.com"
mailClient.Port = 587
mailClient.EnableSsl = True
mailClient.UseDefaultCredentials = False
mailClient.Credentials = basicAuthenticationInfo
mailClient.Send(Email)

Your Line

SMTPServer.Credentials = New System.Net.NetworkCredential("username", "password")

Shouldn't "username" and "password" just be username and password?

Cheers