CODEWITHSUNDEEP
vb.netsmtpclient
Smith
Smith

Reputation: 5961

system.net.mail does not send mail

i am developing with vb2005, using system.net.mail to send mail using google configuration. a full sample of my code was posted here earlier 

        With smtp
            .Host = "smtp.google.com"
            .Port = 465
            .UseDefaultCredentials = False
            .Credentials = New System.Net.NetworkCredential(mygoogleemail, mypass)
            .EnableSsl = true
            .Timeout = 60000
        End With

i get the operation has timed out. if i change the port to 587, it says that the server does not support secure connection

[EDIT] could firewall be blocking it?

is there anyway to specify sending application name?

Upvotes: 0

Views: 7123

Answers (5)

Dipesh Sawant
Dipesh Sawant

Reputation: 1

If you are using TWO STEP VERIFICATION for gmail, then disable it first and then try again with this code

Dim myLogin As New NetworkCredential("[email protected]", "password")
Dim msg As New MailMessage("[email protected]", "[email protected]", "subjectLine", "emailBodyText")

msg.IsBodyHtml = True

Try
    Dim client As New SmtpClient("smtp.gmail.com", 587)
    client.EnableSsl = True
    client.UseDefaultCredentials = false
    client.Credentials = myLogin
    client.Send(msg)
Catch ex As SmtpException
    msgbox(ex.Message)
End Try

Upvotes: 0

Saif Khan
Saif Khan

Reputation: 18792

Try

Dim myLogin As New NetworkCredential("[email protected]", "password")
Dim msg As New MailMessage("[email protected]", "[email protected]", "subjectLine", "emailBodyText")

msg.IsBodyHtml = True

Try
    Dim client As New SmtpClient("smtp.gmail.com", 587)
    client.EnableSsl = True
    client.UseDefaultCredentials = false
    client.Credentials = myLogin
    client.Send(msg)
Catch ex As SmtpException
    msgbox(ex.Message)
End Try

If you get the timeout then troubleshoot

  1. Go to gmail.com and make sure you can loging with those credentials.
  2. Login to gmail account and go to settings and make sure POP/IMAP is setup. I don't think they allow you to send mail thru your account unless this is turned on.
  3. Try changing the port to 25 with SSL.

  4. Try to TELNET the mail server to see if you are able to send relay mails via your ISP

    Open command prompt and type (without quotes) telnet smtp.gmail.com 25

If you get a timeout then the problem is either your local LAN is blocking mails or your ISP.

Upvotes: 2

dbasnett
dbasnett

Reputation: 11773

The port was right in the OP, but the host was wrong

    With smtp
        .Port = 465 '465 for ssl
        .EnableSsl = True
        .UseDefaultCredentials = False
        .Credentials = New System.Net.NetworkCredential("[email protected]", "yourpassword")
        .Host = "smtp.gmail.com"
    End With

And just to verify, you have pop enabled in gmail, correct?

Upvotes: 1

sclarson
sclarson

Reputation: 4422

Have you tried the answer at : Sending email through Gmail SMTP server with C#

Just to see if that works.

Note that in the answer to his solution he mentions web.config changes lower in the post not accepted as the answer

<system.net>
  <mailSettings>
    <smtp from="[email protected]" deliveryMethod="Network">
      <network defaultCredentials="false" enableSsl="true" host="smtp.gmail.com" port="587" password="password" userName="[email protected]"/>
    </smtp>
  </mailSettings>  
</system.net>

Upvotes: 2

codeandcloud
codeandcloud

Reputation: 55200

The Port number is 587.

And also, try this order as per this solution

    With smtp
        .UseDefaultCredentials = False
        .Credentials = New System.Net.NetworkCredential("[email protected]", "mypwd")
        .Host = "smtp.gmail.com"
        .Port = 587
        .EnableSsl = true
    End With

Upvotes: -1

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